diff --git a/backend/ent/migrate/schema.go b/backend/ent/migrate/schema.go
index edae57d212..d3e8bc5448 100644
--- a/backend/ent/migrate/schema.go
+++ b/backend/ent/migrate/schema.go
@@ -1572,6 +1572,9 @@ var (
 		{Name: "image_output_size", Type: field.TypeString, Nullable: true, Size: 32},
 		{Name: "image_size_source", Type: field.TypeString, Nullable: true, Size: 16},
 		{Name: "image_size_breakdown", Type: field.TypeJSON, Nullable: true, SchemaType: map[string]string{"postgres": "jsonb"}},
+		{Name: "video_count", Type: field.TypeInt, Default: 0},
+		{Name: "video_resolution", Type: field.TypeString, Nullable: true, Size: 10},
+		{Name: "video_duration_seconds", Type: field.TypeInt, Nullable: true},
 		{Name: "cache_ttl_overridden", Type: field.TypeBool, Default: false},
 		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "api_key_id", Type: field.TypeInt64},
@@ -1588,31 +1591,31 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "usage_logs_api_keys_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[37]},
+				Columns:    []*schema.Column{UsageLogsColumns[40]},
 				RefColumns: []*schema.Column{APIKeysColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_accounts_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[38]},
+				Columns:    []*schema.Column{UsageLogsColumns[41]},
 				RefColumns: []*schema.Column{AccountsColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_groups_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[39]},
+				Columns:    []*schema.Column{UsageLogsColumns[42]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "usage_logs_users_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[40]},
+				Columns:    []*schema.Column{UsageLogsColumns[43]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_user_subscriptions_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[41]},
+				Columns:    []*schema.Column{UsageLogsColumns[44]},
 				RefColumns: []*schema.Column{UserSubscriptionsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -1621,32 +1624,32 @@ var (
 			{
 				Name:    "usagelog_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[40]},
+				Columns: []*schema.Column{UsageLogsColumns[43]},
 			},
 			{
 				Name:    "usagelog_api_key_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[37]},
+				Columns: []*schema.Column{UsageLogsColumns[40]},
 			},
 			{
 				Name:    "usagelog_account_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[38]},
+				Columns: []*schema.Column{UsageLogsColumns[41]},
 			},
 			{
 				Name:    "usagelog_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[39]},
+				Columns: []*schema.Column{UsageLogsColumns[42]},
 			},
 			{
 				Name:    "usagelog_subscription_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[41]},
+				Columns: []*schema.Column{UsageLogsColumns[44]},
 			},
 			{
 				Name:    "usagelog_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[36]},
+				Columns: []*schema.Column{UsageLogsColumns[39]},
 			},
 			{
 				Name:    "usagelog_model",
@@ -1666,17 +1669,17 @@ var (
 			{
 				Name:    "usagelog_user_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[40], UsageLogsColumns[36]},
+				Columns: []*schema.Column{UsageLogsColumns[43], UsageLogsColumns[39]},
 			},
 			{
 				Name:    "usagelog_api_key_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[37], UsageLogsColumns[36]},
+				Columns: []*schema.Column{UsageLogsColumns[40], UsageLogsColumns[39]},
 			},
 			{
 				Name:    "usagelog_group_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[39], UsageLogsColumns[36]},
+				Columns: []*schema.Column{UsageLogsColumns[42], UsageLogsColumns[39]},
 			},
 		},
 	}
diff --git a/backend/ent/mutation.go b/backend/ent/mutation.go
index 07f8ce623e..8d32773050 100644
--- a/backend/ent/mutation.go
+++ b/backend/ent/mutation.go
@@ -41712,6 +41712,11 @@ type UsageLogMutation struct {
 	image_output_size           *string
 	image_size_source           *string
 	image_size_breakdown        *map[string]int
+	video_count                 *int
+	addvideo_count              *int
+	video_resolution            *string
+	video_duration_seconds      *int
+	addvideo_duration_seconds   *int
 	cache_ttl_overridden        *bool
 	created_at                  *time.Time
 	clearedFields               map[string]struct{}
@@ -43850,6 +43855,181 @@ func (m *UsageLogMutation) ResetImageSizeBreakdown() {
 	delete(m.clearedFields, usagelog.FieldImageSizeBreakdown)
 }
 
+// SetVideoCount sets the "video_count" field.
+func (m *UsageLogMutation) SetVideoCount(i int) {
+	m.video_count = &i
+	m.addvideo_count = nil
+}
+
+// VideoCount returns the value of the "video_count" field in the mutation.
+func (m *UsageLogMutation) VideoCount() (r int, exists bool) {
+	v := m.video_count
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldVideoCount returns the old "video_count" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldVideoCount(ctx context.Context) (v int, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldVideoCount is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldVideoCount requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldVideoCount: %w", err)
+	}
+	return oldValue.VideoCount, nil
+}
+
+// AddVideoCount adds i to the "video_count" field.
+func (m *UsageLogMutation) AddVideoCount(i int) {
+	if m.addvideo_count != nil {
+		*m.addvideo_count += i
+	} else {
+		m.addvideo_count = &i
+	}
+}
+
+// AddedVideoCount returns the value that was added to the "video_count" field in this mutation.
+func (m *UsageLogMutation) AddedVideoCount() (r int, exists bool) {
+	v := m.addvideo_count
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ResetVideoCount resets all changes to the "video_count" field.
+func (m *UsageLogMutation) ResetVideoCount() {
+	m.video_count = nil
+	m.addvideo_count = nil
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (m *UsageLogMutation) SetVideoResolution(s string) {
+	m.video_resolution = &s
+}
+
+// VideoResolution returns the value of the "video_resolution" field in the mutation.
+func (m *UsageLogMutation) VideoResolution() (r string, exists bool) {
+	v := m.video_resolution
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldVideoResolution returns the old "video_resolution" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldVideoResolution(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldVideoResolution is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldVideoResolution requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldVideoResolution: %w", err)
+	}
+	return oldValue.VideoResolution, nil
+}
+
+// ClearVideoResolution clears the value of the "video_resolution" field.
+func (m *UsageLogMutation) ClearVideoResolution() {
+	m.video_resolution = nil
+	m.clearedFields[usagelog.FieldVideoResolution] = struct{}{}
+}
+
+// VideoResolutionCleared returns if the "video_resolution" field was cleared in this mutation.
+func (m *UsageLogMutation) VideoResolutionCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldVideoResolution]
+	return ok
+}
+
+// ResetVideoResolution resets all changes to the "video_resolution" field.
+func (m *UsageLogMutation) ResetVideoResolution() {
+	m.video_resolution = nil
+	delete(m.clearedFields, usagelog.FieldVideoResolution)
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (m *UsageLogMutation) SetVideoDurationSeconds(i int) {
+	m.video_duration_seconds = &i
+	m.addvideo_duration_seconds = nil
+}
+
+// VideoDurationSeconds returns the value of the "video_duration_seconds" field in the mutation.
+func (m *UsageLogMutation) VideoDurationSeconds() (r int, exists bool) {
+	v := m.video_duration_seconds
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldVideoDurationSeconds returns the old "video_duration_seconds" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldVideoDurationSeconds(ctx context.Context) (v *int, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldVideoDurationSeconds is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldVideoDurationSeconds requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldVideoDurationSeconds: %w", err)
+	}
+	return oldValue.VideoDurationSeconds, nil
+}
+
+// AddVideoDurationSeconds adds i to the "video_duration_seconds" field.
+func (m *UsageLogMutation) AddVideoDurationSeconds(i int) {
+	if m.addvideo_duration_seconds != nil {
+		*m.addvideo_duration_seconds += i
+	} else {
+		m.addvideo_duration_seconds = &i
+	}
+}
+
+// AddedVideoDurationSeconds returns the value that was added to the "video_duration_seconds" field in this mutation.
+func (m *UsageLogMutation) AddedVideoDurationSeconds() (r int, exists bool) {
+	v := m.addvideo_duration_seconds
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearVideoDurationSeconds clears the value of the "video_duration_seconds" field.
+func (m *UsageLogMutation) ClearVideoDurationSeconds() {
+	m.video_duration_seconds = nil
+	m.addvideo_duration_seconds = nil
+	m.clearedFields[usagelog.FieldVideoDurationSeconds] = struct{}{}
+}
+
+// VideoDurationSecondsCleared returns if the "video_duration_seconds" field was cleared in this mutation.
+func (m *UsageLogMutation) VideoDurationSecondsCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldVideoDurationSeconds]
+	return ok
+}
+
+// ResetVideoDurationSeconds resets all changes to the "video_duration_seconds" field.
+func (m *UsageLogMutation) ResetVideoDurationSeconds() {
+	m.video_duration_seconds = nil
+	m.addvideo_duration_seconds = nil
+	delete(m.clearedFields, usagelog.FieldVideoDurationSeconds)
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (m *UsageLogMutation) SetCacheTTLOverridden(b bool) {
 	m.cache_ttl_overridden = &b
@@ -44091,7 +44271,7 @@ func (m *UsageLogMutation) Type() string {
 // order to get all numeric fields that were incremented/decremented, call
 // AddedFields().
 func (m *UsageLogMutation) Fields() []string {
-	fields := make([]string, 0, 41)
+	fields := make([]string, 0, 44)
 	if m.user != nil {
 		fields = append(fields, usagelog.FieldUserID)
 	}
@@ -44209,6 +44389,15 @@ func (m *UsageLogMutation) Fields() []string {
 	if m.image_size_breakdown != nil {
 		fields = append(fields, usagelog.FieldImageSizeBreakdown)
 	}
+	if m.video_count != nil {
+		fields = append(fields, usagelog.FieldVideoCount)
+	}
+	if m.video_resolution != nil {
+		fields = append(fields, usagelog.FieldVideoResolution)
+	}
+	if m.video_duration_seconds != nil {
+		fields = append(fields, usagelog.FieldVideoDurationSeconds)
+	}
 	if m.cache_ttl_overridden != nil {
 		fields = append(fields, usagelog.FieldCacheTTLOverridden)
 	}
@@ -44301,6 +44490,12 @@ func (m *UsageLogMutation) Field(name string) (ent.Value, bool) {
 		return m.ImageSizeSource()
 	case usagelog.FieldImageSizeBreakdown:
 		return m.ImageSizeBreakdown()
+	case usagelog.FieldVideoCount:
+		return m.VideoCount()
+	case usagelog.FieldVideoResolution:
+		return m.VideoResolution()
+	case usagelog.FieldVideoDurationSeconds:
+		return m.VideoDurationSeconds()
 	case usagelog.FieldCacheTTLOverridden:
 		return m.CacheTTLOverridden()
 	case usagelog.FieldCreatedAt:
@@ -44392,6 +44587,12 @@ func (m *UsageLogMutation) OldField(ctx context.Context, name string) (ent.Value
 		return m.OldImageSizeSource(ctx)
 	case usagelog.FieldImageSizeBreakdown:
 		return m.OldImageSizeBreakdown(ctx)
+	case usagelog.FieldVideoCount:
+		return m.OldVideoCount(ctx)
+	case usagelog.FieldVideoResolution:
+		return m.OldVideoResolution(ctx)
+	case usagelog.FieldVideoDurationSeconds:
+		return m.OldVideoDurationSeconds(ctx)
 	case usagelog.FieldCacheTTLOverridden:
 		return m.OldCacheTTLOverridden(ctx)
 	case usagelog.FieldCreatedAt:
@@ -44678,6 +44879,27 @@ func (m *UsageLogMutation) SetField(name string, value ent.Value) error {
 		}
 		m.SetImageSizeBreakdown(v)
 		return nil
+	case usagelog.FieldVideoCount:
+		v, ok := value.(int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetVideoCount(v)
+		return nil
+	case usagelog.FieldVideoResolution:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetVideoResolution(v)
+		return nil
+	case usagelog.FieldVideoDurationSeconds:
+		v, ok := value.(int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetVideoDurationSeconds(v)
+		return nil
 	case usagelog.FieldCacheTTLOverridden:
 		v, ok := value.(bool)
 		if !ok {
@@ -44757,6 +44979,12 @@ func (m *UsageLogMutation) AddedFields() []string {
 	if m.addimage_count != nil {
 		fields = append(fields, usagelog.FieldImageCount)
 	}
+	if m.addvideo_count != nil {
+		fields = append(fields, usagelog.FieldVideoCount)
+	}
+	if m.addvideo_duration_seconds != nil {
+		fields = append(fields, usagelog.FieldVideoDurationSeconds)
+	}
 	return fields
 }
 
@@ -44803,6 +45031,10 @@ func (m *UsageLogMutation) AddedField(name string) (ent.Value, bool) {
 		return m.AddedFirstTokenMs()
 	case usagelog.FieldImageCount:
 		return m.AddedImageCount()
+	case usagelog.FieldVideoCount:
+		return m.AddedVideoCount()
+	case usagelog.FieldVideoDurationSeconds:
+		return m.AddedVideoDurationSeconds()
 	}
 	return nil, false
 }
@@ -44945,6 +45177,20 @@ func (m *UsageLogMutation) AddField(name string, value ent.Value) error {
 		}
 		m.AddImageCount(v)
 		return nil
+	case usagelog.FieldVideoCount:
+		v, ok := value.(int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.AddVideoCount(v)
+		return nil
+	case usagelog.FieldVideoDurationSeconds:
+		v, ok := value.(int)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.AddVideoDurationSeconds(v)
+		return nil
 	}
 	return fmt.Errorf("unknown UsageLog numeric field %s", name)
 }
@@ -45007,6 +45253,12 @@ func (m *UsageLogMutation) ClearedFields() []string {
 	if m.FieldCleared(usagelog.FieldImageSizeBreakdown) {
 		fields = append(fields, usagelog.FieldImageSizeBreakdown)
 	}
+	if m.FieldCleared(usagelog.FieldVideoResolution) {
+		fields = append(fields, usagelog.FieldVideoResolution)
+	}
+	if m.FieldCleared(usagelog.FieldVideoDurationSeconds) {
+		fields = append(fields, usagelog.FieldVideoDurationSeconds)
+	}
 	return fields
 }
 
@@ -45075,6 +45327,12 @@ func (m *UsageLogMutation) ClearField(name string) error {
 	case usagelog.FieldImageSizeBreakdown:
 		m.ClearImageSizeBreakdown()
 		return nil
+	case usagelog.FieldVideoResolution:
+		m.ClearVideoResolution()
+		return nil
+	case usagelog.FieldVideoDurationSeconds:
+		m.ClearVideoDurationSeconds()
+		return nil
 	}
 	return fmt.Errorf("unknown UsageLog nullable field %s", name)
 }
@@ -45200,6 +45458,15 @@ func (m *UsageLogMutation) ResetField(name string) error {
 	case usagelog.FieldImageSizeBreakdown:
 		m.ResetImageSizeBreakdown()
 		return nil
+	case usagelog.FieldVideoCount:
+		m.ResetVideoCount()
+		return nil
+	case usagelog.FieldVideoResolution:
+		m.ResetVideoResolution()
+		return nil
+	case usagelog.FieldVideoDurationSeconds:
+		m.ResetVideoDurationSeconds()
+		return nil
 	case usagelog.FieldCacheTTLOverridden:
 		m.ResetCacheTTLOverridden()
 		return nil
diff --git a/backend/ent/runtime/runtime.go b/backend/ent/runtime/runtime.go
index ddde08d23d..d47e7d143b 100644
--- a/backend/ent/runtime/runtime.go
+++ b/backend/ent/runtime/runtime.go
@@ -1976,12 +1976,20 @@ func init() {
 	usagelogDescImageSizeSource := usagelogFields[37].Descriptor()
 	// usagelog.ImageSizeSourceValidator is a validator for the "image_size_source" field. It is called by the builders before save.
 	usagelog.ImageSizeSourceValidator = usagelogDescImageSizeSource.Validators[0].(func(string) error)
+	// usagelogDescVideoCount is the schema descriptor for video_count field.
+	usagelogDescVideoCount := usagelogFields[39].Descriptor()
+	// usagelog.DefaultVideoCount holds the default value on creation for the video_count field.
+	usagelog.DefaultVideoCount = usagelogDescVideoCount.Default.(int)
+	// usagelogDescVideoResolution is the schema descriptor for video_resolution field.
+	usagelogDescVideoResolution := usagelogFields[40].Descriptor()
+	// usagelog.VideoResolutionValidator is a validator for the "video_resolution" field. It is called by the builders before save.
+	usagelog.VideoResolutionValidator = usagelogDescVideoResolution.Validators[0].(func(string) error)
 	// usagelogDescCacheTTLOverridden is the schema descriptor for cache_ttl_overridden field.
-	usagelogDescCacheTTLOverridden := usagelogFields[39].Descriptor()
+	usagelogDescCacheTTLOverridden := usagelogFields[42].Descriptor()
 	// usagelog.DefaultCacheTTLOverridden holds the default value on creation for the cache_ttl_overridden field.
 	usagelog.DefaultCacheTTLOverridden = usagelogDescCacheTTLOverridden.Default.(bool)
 	// usagelogDescCreatedAt is the schema descriptor for created_at field.
-	usagelogDescCreatedAt := usagelogFields[40].Descriptor()
+	usagelogDescCreatedAt := usagelogFields[43].Descriptor()
 	// usagelog.DefaultCreatedAt holds the default value on creation for the created_at field.
 	usagelog.DefaultCreatedAt = usagelogDescCreatedAt.Default.(func() time.Time)
 	userMixin := schema.User{}.Mixin()
diff --git a/backend/ent/schema/usage_log.go b/backend/ent/schema/usage_log.go
index db9e517892..e84cc1c140 100644
--- a/backend/ent/schema/usage_log.go
+++ b/backend/ent/schema/usage_log.go
@@ -149,6 +149,20 @@ func (UsageLog) Fields() []ent.Field {
 		field.JSON("image_size_breakdown", map[string]int{}).
 			Optional().
 			SchemaType(map[string]string{dialect.Postgres: "jsonb"}),
+
+		// 视频生成字段（Grok 视频按秒计费；billing_mode 走 token/其他模式时这些列仍标记视频用量）
+		field.Int("video_count").
+			Default(0).
+			Comment("视频生成数量；>0 表示本行是视频生成用量"),
+		field.String("video_resolution").
+			MaxLen(10).
+			Optional().
+			Nillable().
+			Comment("计费用视频分辨率 480p/720p/1080p"),
+		field.Int("video_duration_seconds").
+			Optional().
+			Nillable().
+			Comment("提交时请求的视频时长（秒），按秒计费的乘数"),
 		// Cache TTL Override 标记（管理员强制替换了缓存 TTL 计费）
 		field.Bool("cache_ttl_overridden").
 			Default(false),
diff --git a/backend/ent/usagelog.go b/backend/ent/usagelog.go
index 283fe828a9..4d374a8495 100644
--- a/backend/ent/usagelog.go
+++ b/backend/ent/usagelog.go
@@ -101,6 +101,12 @@ type UsageLog struct {
 	ImageSizeSource *string `json:"image_size_source,omitempty"`
 	// ImageSizeBreakdown holds the value of the "image_size_breakdown" field.
 	ImageSizeBreakdown map[string]int `json:"image_size_breakdown,omitempty"`
+	// 视频生成数量；>0 表示本行是视频生成用量
+	VideoCount int `json:"video_count,omitempty"`
+	// 计费用视频分辨率 480p/720p/1080p
+	VideoResolution *string `json:"video_resolution,omitempty"`
+	// 提交时请求的视频时长（秒），按秒计费的乘数
+	VideoDurationSeconds *int `json:"video_duration_seconds,omitempty"`
 	// CacheTTLOverridden holds the value of the "cache_ttl_overridden" field.
 	CacheTTLOverridden bool `json:"cache_ttl_overridden,omitempty"`
 	// CreatedAt holds the value of the "created_at" field.
@@ -194,9 +200,9 @@ func (*UsageLog) scanValues(columns []string) ([]any, error) {
 			values[i] = new(sql.NullBool)
 		case usagelog.FieldInputCost, usagelog.FieldOutputCost, usagelog.FieldCacheCreationCost, usagelog.FieldCacheReadCost, usagelog.FieldTotalCost, usagelog.FieldActualCost, usagelog.FieldRateMultiplier, usagelog.FieldAccountRateMultiplier:
 			values[i] = new(sql.NullFloat64)
-		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldChannelID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
+		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldChannelID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount, usagelog.FieldVideoCount, usagelog.FieldVideoDurationSeconds:
 			values[i] = new(sql.NullInt64)
-		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldRequestedModel, usagelog.FieldUpstreamModel, usagelog.FieldModelMappingChain, usagelog.FieldBillingTier, usagelog.FieldBillingMode, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize, usagelog.FieldImageInputSize, usagelog.FieldImageOutputSize, usagelog.FieldImageSizeSource:
+		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldRequestedModel, usagelog.FieldUpstreamModel, usagelog.FieldModelMappingChain, usagelog.FieldBillingTier, usagelog.FieldBillingMode, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize, usagelog.FieldImageInputSize, usagelog.FieldImageOutputSize, usagelog.FieldImageSizeSource, usagelog.FieldVideoResolution:
 			values[i] = new(sql.NullString)
 		case usagelog.FieldCreatedAt:
 			values[i] = new(sql.NullTime)
@@ -474,6 +480,26 @@ func (_m *UsageLog) assignValues(columns []string, values []any) error {
 					return fmt.Errorf("unmarshal field image_size_breakdown: %w", err)
 				}
 			}
+		case usagelog.FieldVideoCount:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field video_count", values[i])
+			} else if value.Valid {
+				_m.VideoCount = int(value.Int64)
+			}
+		case usagelog.FieldVideoResolution:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field video_resolution", values[i])
+			} else if value.Valid {
+				_m.VideoResolution = new(string)
+				*_m.VideoResolution = value.String
+			}
+		case usagelog.FieldVideoDurationSeconds:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field video_duration_seconds", values[i])
+			} else if value.Valid {
+				_m.VideoDurationSeconds = new(int)
+				*_m.VideoDurationSeconds = int(value.Int64)
+			}
 		case usagelog.FieldCacheTTLOverridden:
 			if value, ok := values[i].(*sql.NullBool); !ok {
 				return fmt.Errorf("unexpected type %T for field cache_ttl_overridden", values[i])
@@ -698,6 +724,19 @@ func (_m *UsageLog) String() string {
 	builder.WriteString("image_size_breakdown=")
 	builder.WriteString(fmt.Sprintf("%v", _m.ImageSizeBreakdown))
 	builder.WriteString(", ")
+	builder.WriteString("video_count=")
+	builder.WriteString(fmt.Sprintf("%v", _m.VideoCount))
+	builder.WriteString(", ")
+	if v := _m.VideoResolution; v != nil {
+		builder.WriteString("video_resolution=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	if v := _m.VideoDurationSeconds; v != nil {
+		builder.WriteString("video_duration_seconds=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
+	builder.WriteString(", ")
 	builder.WriteString("cache_ttl_overridden=")
 	builder.WriteString(fmt.Sprintf("%v", _m.CacheTTLOverridden))
 	builder.WriteString(", ")
diff --git a/backend/ent/usagelog/usagelog.go b/backend/ent/usagelog/usagelog.go
index 297e0b41ad..a74a92c40f 100644
--- a/backend/ent/usagelog/usagelog.go
+++ b/backend/ent/usagelog/usagelog.go
@@ -92,6 +92,12 @@ const (
 	FieldImageSizeSource = "image_size_source"
 	// FieldImageSizeBreakdown holds the string denoting the image_size_breakdown field in the database.
 	FieldImageSizeBreakdown = "image_size_breakdown"
+	// FieldVideoCount holds the string denoting the video_count field in the database.
+	FieldVideoCount = "video_count"
+	// FieldVideoResolution holds the string denoting the video_resolution field in the database.
+	FieldVideoResolution = "video_resolution"
+	// FieldVideoDurationSeconds holds the string denoting the video_duration_seconds field in the database.
+	FieldVideoDurationSeconds = "video_duration_seconds"
 	// FieldCacheTTLOverridden holds the string denoting the cache_ttl_overridden field in the database.
 	FieldCacheTTLOverridden = "cache_ttl_overridden"
 	// FieldCreatedAt holds the string denoting the created_at field in the database.
@@ -187,6 +193,9 @@ var Columns = []string{
 	FieldImageOutputSize,
 	FieldImageSizeSource,
 	FieldImageSizeBreakdown,
+	FieldVideoCount,
+	FieldVideoResolution,
+	FieldVideoDurationSeconds,
 	FieldCacheTTLOverridden,
 	FieldCreatedAt,
 }
@@ -260,6 +269,10 @@ var (
 	ImageOutputSizeValidator func(string) error
 	// ImageSizeSourceValidator is a validator for the "image_size_source" field. It is called by the builders before save.
 	ImageSizeSourceValidator func(string) error
+	// DefaultVideoCount holds the default value on creation for the "video_count" field.
+	DefaultVideoCount int
+	// VideoResolutionValidator is a validator for the "video_resolution" field. It is called by the builders before save.
+	VideoResolutionValidator func(string) error
 	// DefaultCacheTTLOverridden holds the default value on creation for the "cache_ttl_overridden" field.
 	DefaultCacheTTLOverridden bool
 	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
@@ -464,6 +477,21 @@ func ByImageSizeSource(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldImageSizeSource, opts...).ToFunc()
 }
 
+// ByVideoCount orders the results by the video_count field.
+func ByVideoCount(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldVideoCount, opts...).ToFunc()
+}
+
+// ByVideoResolution orders the results by the video_resolution field.
+func ByVideoResolution(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldVideoResolution, opts...).ToFunc()
+}
+
+// ByVideoDurationSeconds orders the results by the video_duration_seconds field.
+func ByVideoDurationSeconds(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldVideoDurationSeconds, opts...).ToFunc()
+}
+
 // ByCacheTTLOverridden orders the results by the cache_ttl_overridden field.
 func ByCacheTTLOverridden(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldCacheTTLOverridden, opts...).ToFunc()
diff --git a/backend/ent/usagelog/where.go b/backend/ent/usagelog/where.go
index 2987f17930..4b08cc3425 100644
--- a/backend/ent/usagelog/where.go
+++ b/backend/ent/usagelog/where.go
@@ -245,6 +245,21 @@ func ImageSizeSource(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldImageSizeSource, v))
 }
 
+// VideoCount applies equality check predicate on the "video_count" field. It's identical to VideoCountEQ.
+func VideoCount(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldVideoCount, v))
+}
+
+// VideoResolution applies equality check predicate on the "video_resolution" field. It's identical to VideoResolutionEQ.
+func VideoResolution(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldVideoResolution, v))
+}
+
+// VideoDurationSeconds applies equality check predicate on the "video_duration_seconds" field. It's identical to VideoDurationSecondsEQ.
+func VideoDurationSeconds(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldVideoDurationSeconds, v))
+}
+
 // CacheTTLOverridden applies equality check predicate on the "cache_ttl_overridden" field. It's identical to CacheTTLOverriddenEQ.
 func CacheTTLOverridden(v bool) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldCacheTTLOverridden, v))
@@ -2150,6 +2165,171 @@ func ImageSizeBreakdownNotNil() predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldNotNull(FieldImageSizeBreakdown))
 }
 
+// VideoCountEQ applies the EQ predicate on the "video_count" field.
+func VideoCountEQ(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldVideoCount, v))
+}
+
+// VideoCountNEQ applies the NEQ predicate on the "video_count" field.
+func VideoCountNEQ(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldVideoCount, v))
+}
+
+// VideoCountIn applies the In predicate on the "video_count" field.
+func VideoCountIn(vs ...int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldVideoCount, vs...))
+}
+
+// VideoCountNotIn applies the NotIn predicate on the "video_count" field.
+func VideoCountNotIn(vs ...int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldVideoCount, vs...))
+}
+
+// VideoCountGT applies the GT predicate on the "video_count" field.
+func VideoCountGT(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldVideoCount, v))
+}
+
+// VideoCountGTE applies the GTE predicate on the "video_count" field.
+func VideoCountGTE(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldVideoCount, v))
+}
+
+// VideoCountLT applies the LT predicate on the "video_count" field.
+func VideoCountLT(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldVideoCount, v))
+}
+
+// VideoCountLTE applies the LTE predicate on the "video_count" field.
+func VideoCountLTE(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldVideoCount, v))
+}
+
+// VideoResolutionEQ applies the EQ predicate on the "video_resolution" field.
+func VideoResolutionEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldVideoResolution, v))
+}
+
+// VideoResolutionNEQ applies the NEQ predicate on the "video_resolution" field.
+func VideoResolutionNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldVideoResolution, v))
+}
+
+// VideoResolutionIn applies the In predicate on the "video_resolution" field.
+func VideoResolutionIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldVideoResolution, vs...))
+}
+
+// VideoResolutionNotIn applies the NotIn predicate on the "video_resolution" field.
+func VideoResolutionNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldVideoResolution, vs...))
+}
+
+// VideoResolutionGT applies the GT predicate on the "video_resolution" field.
+func VideoResolutionGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldVideoResolution, v))
+}
+
+// VideoResolutionGTE applies the GTE predicate on the "video_resolution" field.
+func VideoResolutionGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldVideoResolution, v))
+}
+
+// VideoResolutionLT applies the LT predicate on the "video_resolution" field.
+func VideoResolutionLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldVideoResolution, v))
+}
+
+// VideoResolutionLTE applies the LTE predicate on the "video_resolution" field.
+func VideoResolutionLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldVideoResolution, v))
+}
+
+// VideoResolutionContains applies the Contains predicate on the "video_resolution" field.
+func VideoResolutionContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldVideoResolution, v))
+}
+
+// VideoResolutionHasPrefix applies the HasPrefix predicate on the "video_resolution" field.
+func VideoResolutionHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldVideoResolution, v))
+}
+
+// VideoResolutionHasSuffix applies the HasSuffix predicate on the "video_resolution" field.
+func VideoResolutionHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldVideoResolution, v))
+}
+
+// VideoResolutionIsNil applies the IsNil predicate on the "video_resolution" field.
+func VideoResolutionIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldVideoResolution))
+}
+
+// VideoResolutionNotNil applies the NotNil predicate on the "video_resolution" field.
+func VideoResolutionNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldVideoResolution))
+}
+
+// VideoResolutionEqualFold applies the EqualFold predicate on the "video_resolution" field.
+func VideoResolutionEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldVideoResolution, v))
+}
+
+// VideoResolutionContainsFold applies the ContainsFold predicate on the "video_resolution" field.
+func VideoResolutionContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldVideoResolution, v))
+}
+
+// VideoDurationSecondsEQ applies the EQ predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsEQ(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldVideoDurationSeconds, v))
+}
+
+// VideoDurationSecondsNEQ applies the NEQ predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsNEQ(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldVideoDurationSeconds, v))
+}
+
+// VideoDurationSecondsIn applies the In predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsIn(vs ...int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldVideoDurationSeconds, vs...))
+}
+
+// VideoDurationSecondsNotIn applies the NotIn predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsNotIn(vs ...int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldVideoDurationSeconds, vs...))
+}
+
+// VideoDurationSecondsGT applies the GT predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsGT(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldVideoDurationSeconds, v))
+}
+
+// VideoDurationSecondsGTE applies the GTE predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsGTE(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldVideoDurationSeconds, v))
+}
+
+// VideoDurationSecondsLT applies the LT predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsLT(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldVideoDurationSeconds, v))
+}
+
+// VideoDurationSecondsLTE applies the LTE predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsLTE(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldVideoDurationSeconds, v))
+}
+
+// VideoDurationSecondsIsNil applies the IsNil predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldVideoDurationSeconds))
+}
+
+// VideoDurationSecondsNotNil applies the NotNil predicate on the "video_duration_seconds" field.
+func VideoDurationSecondsNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldVideoDurationSeconds))
+}
+
 // CacheTTLOverriddenEQ applies the EQ predicate on the "cache_ttl_overridden" field.
 func CacheTTLOverriddenEQ(v bool) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldCacheTTLOverridden, v))
diff --git a/backend/ent/usagelog_create.go b/backend/ent/usagelog_create.go
index 17e800f9ca..3326f72fc0 100644
--- a/backend/ent/usagelog_create.go
+++ b/backend/ent/usagelog_create.go
@@ -525,6 +525,48 @@ func (_c *UsageLogCreate) SetImageSizeBreakdown(v map[string]int) *UsageLogCreat
 	return _c
 }
 
+// SetVideoCount sets the "video_count" field.
+func (_c *UsageLogCreate) SetVideoCount(v int) *UsageLogCreate {
+	_c.mutation.SetVideoCount(v)
+	return _c
+}
+
+// SetNillableVideoCount sets the "video_count" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableVideoCount(v *int) *UsageLogCreate {
+	if v != nil {
+		_c.SetVideoCount(*v)
+	}
+	return _c
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (_c *UsageLogCreate) SetVideoResolution(v string) *UsageLogCreate {
+	_c.mutation.SetVideoResolution(v)
+	return _c
+}
+
+// SetNillableVideoResolution sets the "video_resolution" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableVideoResolution(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetVideoResolution(*v)
+	}
+	return _c
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (_c *UsageLogCreate) SetVideoDurationSeconds(v int) *UsageLogCreate {
+	_c.mutation.SetVideoDurationSeconds(v)
+	return _c
+}
+
+// SetNillableVideoDurationSeconds sets the "video_duration_seconds" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableVideoDurationSeconds(v *int) *UsageLogCreate {
+	if v != nil {
+		_c.SetVideoDurationSeconds(*v)
+	}
+	return _c
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (_c *UsageLogCreate) SetCacheTTLOverridden(v bool) *UsageLogCreate {
 	_c.mutation.SetCacheTTLOverridden(v)
@@ -677,6 +719,10 @@ func (_c *UsageLogCreate) defaults() {
 		v := usagelog.DefaultImageCount
 		_c.mutation.SetImageCount(v)
 	}
+	if _, ok := _c.mutation.VideoCount(); !ok {
+		v := usagelog.DefaultVideoCount
+		_c.mutation.SetVideoCount(v)
+	}
 	if _, ok := _c.mutation.CacheTTLOverridden(); !ok {
 		v := usagelog.DefaultCacheTTLOverridden
 		_c.mutation.SetCacheTTLOverridden(v)
@@ -817,6 +863,14 @@ func (_c *UsageLogCreate) check() error {
 			return &ValidationError{Name: "image_size_source", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size_source": %w`, err)}
 		}
 	}
+	if _, ok := _c.mutation.VideoCount(); !ok {
+		return &ValidationError{Name: "video_count", err: errors.New(`ent: missing required field "UsageLog.video_count"`)}
+	}
+	if v, ok := _c.mutation.VideoResolution(); ok {
+		if err := usagelog.VideoResolutionValidator(v); err != nil {
+			return &ValidationError{Name: "video_resolution", err: fmt.Errorf(`ent: validator failed for field "UsageLog.video_resolution": %w`, err)}
+		}
+	}
 	if _, ok := _c.mutation.CacheTTLOverridden(); !ok {
 		return &ValidationError{Name: "cache_ttl_overridden", err: errors.New(`ent: missing required field "UsageLog.cache_ttl_overridden"`)}
 	}
@@ -995,6 +1049,18 @@ func (_c *UsageLogCreate) createSpec() (*UsageLog, *sqlgraph.CreateSpec) {
 		_spec.SetField(usagelog.FieldImageSizeBreakdown, field.TypeJSON, value)
 		_node.ImageSizeBreakdown = value
 	}
+	if value, ok := _c.mutation.VideoCount(); ok {
+		_spec.SetField(usagelog.FieldVideoCount, field.TypeInt, value)
+		_node.VideoCount = value
+	}
+	if value, ok := _c.mutation.VideoResolution(); ok {
+		_spec.SetField(usagelog.FieldVideoResolution, field.TypeString, value)
+		_node.VideoResolution = &value
+	}
+	if value, ok := _c.mutation.VideoDurationSeconds(); ok {
+		_spec.SetField(usagelog.FieldVideoDurationSeconds, field.TypeInt, value)
+		_node.VideoDurationSeconds = &value
+	}
 	if value, ok := _c.mutation.CacheTTLOverridden(); ok {
 		_spec.SetField(usagelog.FieldCacheTTLOverridden, field.TypeBool, value)
 		_node.CacheTTLOverridden = value
@@ -1830,6 +1896,66 @@ func (u *UsageLogUpsert) ClearImageSizeBreakdown() *UsageLogUpsert {
 	return u
 }
 
+// SetVideoCount sets the "video_count" field.
+func (u *UsageLogUpsert) SetVideoCount(v int) *UsageLogUpsert {
+	u.Set(usagelog.FieldVideoCount, v)
+	return u
+}
+
+// UpdateVideoCount sets the "video_count" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateVideoCount() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldVideoCount)
+	return u
+}
+
+// AddVideoCount adds v to the "video_count" field.
+func (u *UsageLogUpsert) AddVideoCount(v int) *UsageLogUpsert {
+	u.Add(usagelog.FieldVideoCount, v)
+	return u
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (u *UsageLogUpsert) SetVideoResolution(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldVideoResolution, v)
+	return u
+}
+
+// UpdateVideoResolution sets the "video_resolution" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateVideoResolution() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldVideoResolution)
+	return u
+}
+
+// ClearVideoResolution clears the value of the "video_resolution" field.
+func (u *UsageLogUpsert) ClearVideoResolution() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldVideoResolution)
+	return u
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (u *UsageLogUpsert) SetVideoDurationSeconds(v int) *UsageLogUpsert {
+	u.Set(usagelog.FieldVideoDurationSeconds, v)
+	return u
+}
+
+// UpdateVideoDurationSeconds sets the "video_duration_seconds" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateVideoDurationSeconds() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldVideoDurationSeconds)
+	return u
+}
+
+// AddVideoDurationSeconds adds v to the "video_duration_seconds" field.
+func (u *UsageLogUpsert) AddVideoDurationSeconds(v int) *UsageLogUpsert {
+	u.Add(usagelog.FieldVideoDurationSeconds, v)
+	return u
+}
+
+// ClearVideoDurationSeconds clears the value of the "video_duration_seconds" field.
+func (u *UsageLogUpsert) ClearVideoDurationSeconds() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldVideoDurationSeconds)
+	return u
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (u *UsageLogUpsert) SetCacheTTLOverridden(v bool) *UsageLogUpsert {
 	u.Set(usagelog.FieldCacheTTLOverridden, v)
@@ -2692,6 +2818,76 @@ func (u *UsageLogUpsertOne) ClearImageSizeBreakdown() *UsageLogUpsertOne {
 	})
 }
 
+// SetVideoCount sets the "video_count" field.
+func (u *UsageLogUpsertOne) SetVideoCount(v int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetVideoCount(v)
+	})
+}
+
+// AddVideoCount adds v to the "video_count" field.
+func (u *UsageLogUpsertOne) AddVideoCount(v int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddVideoCount(v)
+	})
+}
+
+// UpdateVideoCount sets the "video_count" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateVideoCount() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateVideoCount()
+	})
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (u *UsageLogUpsertOne) SetVideoResolution(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetVideoResolution(v)
+	})
+}
+
+// UpdateVideoResolution sets the "video_resolution" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateVideoResolution() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateVideoResolution()
+	})
+}
+
+// ClearVideoResolution clears the value of the "video_resolution" field.
+func (u *UsageLogUpsertOne) ClearVideoResolution() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearVideoResolution()
+	})
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (u *UsageLogUpsertOne) SetVideoDurationSeconds(v int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetVideoDurationSeconds(v)
+	})
+}
+
+// AddVideoDurationSeconds adds v to the "video_duration_seconds" field.
+func (u *UsageLogUpsertOne) AddVideoDurationSeconds(v int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddVideoDurationSeconds(v)
+	})
+}
+
+// UpdateVideoDurationSeconds sets the "video_duration_seconds" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateVideoDurationSeconds() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateVideoDurationSeconds()
+	})
+}
+
+// ClearVideoDurationSeconds clears the value of the "video_duration_seconds" field.
+func (u *UsageLogUpsertOne) ClearVideoDurationSeconds() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearVideoDurationSeconds()
+	})
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (u *UsageLogUpsertOne) SetCacheTTLOverridden(v bool) *UsageLogUpsertOne {
 	return u.Update(func(s *UsageLogUpsert) {
@@ -3722,6 +3918,76 @@ func (u *UsageLogUpsertBulk) ClearImageSizeBreakdown() *UsageLogUpsertBulk {
 	})
 }
 
+// SetVideoCount sets the "video_count" field.
+func (u *UsageLogUpsertBulk) SetVideoCount(v int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetVideoCount(v)
+	})
+}
+
+// AddVideoCount adds v to the "video_count" field.
+func (u *UsageLogUpsertBulk) AddVideoCount(v int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddVideoCount(v)
+	})
+}
+
+// UpdateVideoCount sets the "video_count" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateVideoCount() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateVideoCount()
+	})
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (u *UsageLogUpsertBulk) SetVideoResolution(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetVideoResolution(v)
+	})
+}
+
+// UpdateVideoResolution sets the "video_resolution" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateVideoResolution() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateVideoResolution()
+	})
+}
+
+// ClearVideoResolution clears the value of the "video_resolution" field.
+func (u *UsageLogUpsertBulk) ClearVideoResolution() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearVideoResolution()
+	})
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (u *UsageLogUpsertBulk) SetVideoDurationSeconds(v int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetVideoDurationSeconds(v)
+	})
+}
+
+// AddVideoDurationSeconds adds v to the "video_duration_seconds" field.
+func (u *UsageLogUpsertBulk) AddVideoDurationSeconds(v int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddVideoDurationSeconds(v)
+	})
+}
+
+// UpdateVideoDurationSeconds sets the "video_duration_seconds" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateVideoDurationSeconds() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateVideoDurationSeconds()
+	})
+}
+
+// ClearVideoDurationSeconds clears the value of the "video_duration_seconds" field.
+func (u *UsageLogUpsertBulk) ClearVideoDurationSeconds() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearVideoDurationSeconds()
+	})
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (u *UsageLogUpsertBulk) SetCacheTTLOverridden(v bool) *UsageLogUpsertBulk {
 	return u.Update(func(s *UsageLogUpsert) {
diff --git a/backend/ent/usagelog_update.go b/backend/ent/usagelog_update.go
index e8fa003c63..00a65ccff1 100644
--- a/backend/ent/usagelog_update.go
+++ b/backend/ent/usagelog_update.go
@@ -811,6 +811,74 @@ func (_u *UsageLogUpdate) ClearImageSizeBreakdown() *UsageLogUpdate {
 	return _u
 }
 
+// SetVideoCount sets the "video_count" field.
+func (_u *UsageLogUpdate) SetVideoCount(v int) *UsageLogUpdate {
+	_u.mutation.ResetVideoCount()
+	_u.mutation.SetVideoCount(v)
+	return _u
+}
+
+// SetNillableVideoCount sets the "video_count" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableVideoCount(v *int) *UsageLogUpdate {
+	if v != nil {
+		_u.SetVideoCount(*v)
+	}
+	return _u
+}
+
+// AddVideoCount adds value to the "video_count" field.
+func (_u *UsageLogUpdate) AddVideoCount(v int) *UsageLogUpdate {
+	_u.mutation.AddVideoCount(v)
+	return _u
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (_u *UsageLogUpdate) SetVideoResolution(v string) *UsageLogUpdate {
+	_u.mutation.SetVideoResolution(v)
+	return _u
+}
+
+// SetNillableVideoResolution sets the "video_resolution" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableVideoResolution(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetVideoResolution(*v)
+	}
+	return _u
+}
+
+// ClearVideoResolution clears the value of the "video_resolution" field.
+func (_u *UsageLogUpdate) ClearVideoResolution() *UsageLogUpdate {
+	_u.mutation.ClearVideoResolution()
+	return _u
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (_u *UsageLogUpdate) SetVideoDurationSeconds(v int) *UsageLogUpdate {
+	_u.mutation.ResetVideoDurationSeconds()
+	_u.mutation.SetVideoDurationSeconds(v)
+	return _u
+}
+
+// SetNillableVideoDurationSeconds sets the "video_duration_seconds" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableVideoDurationSeconds(v *int) *UsageLogUpdate {
+	if v != nil {
+		_u.SetVideoDurationSeconds(*v)
+	}
+	return _u
+}
+
+// AddVideoDurationSeconds adds value to the "video_duration_seconds" field.
+func (_u *UsageLogUpdate) AddVideoDurationSeconds(v int) *UsageLogUpdate {
+	_u.mutation.AddVideoDurationSeconds(v)
+	return _u
+}
+
+// ClearVideoDurationSeconds clears the value of the "video_duration_seconds" field.
+func (_u *UsageLogUpdate) ClearVideoDurationSeconds() *UsageLogUpdate {
+	_u.mutation.ClearVideoDurationSeconds()
+	return _u
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (_u *UsageLogUpdate) SetCacheTTLOverridden(v bool) *UsageLogUpdate {
 	_u.mutation.SetCacheTTLOverridden(v)
@@ -979,6 +1047,11 @@ func (_u *UsageLogUpdate) check() error {
 			return &ValidationError{Name: "image_size_source", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size_source": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.VideoResolution(); ok {
+		if err := usagelog.VideoResolutionValidator(v); err != nil {
+			return &ValidationError{Name: "video_resolution", err: fmt.Errorf(`ent: validator failed for field "UsageLog.video_resolution": %w`, err)}
+		}
+	}
 	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
 		return errors.New(`ent: clearing a required unique edge "UsageLog.user"`)
 	}
@@ -1210,6 +1283,27 @@ func (_u *UsageLogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if _u.mutation.ImageSizeBreakdownCleared() {
 		_spec.ClearField(usagelog.FieldImageSizeBreakdown, field.TypeJSON)
 	}
+	if value, ok := _u.mutation.VideoCount(); ok {
+		_spec.SetField(usagelog.FieldVideoCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedVideoCount(); ok {
+		_spec.AddField(usagelog.FieldVideoCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.VideoResolution(); ok {
+		_spec.SetField(usagelog.FieldVideoResolution, field.TypeString, value)
+	}
+	if _u.mutation.VideoResolutionCleared() {
+		_spec.ClearField(usagelog.FieldVideoResolution, field.TypeString)
+	}
+	if value, ok := _u.mutation.VideoDurationSeconds(); ok {
+		_spec.SetField(usagelog.FieldVideoDurationSeconds, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedVideoDurationSeconds(); ok {
+		_spec.AddField(usagelog.FieldVideoDurationSeconds, field.TypeInt, value)
+	}
+	if _u.mutation.VideoDurationSecondsCleared() {
+		_spec.ClearField(usagelog.FieldVideoDurationSeconds, field.TypeInt)
+	}
 	if value, ok := _u.mutation.CacheTTLOverridden(); ok {
 		_spec.SetField(usagelog.FieldCacheTTLOverridden, field.TypeBool, value)
 	}
@@ -2157,6 +2251,74 @@ func (_u *UsageLogUpdateOne) ClearImageSizeBreakdown() *UsageLogUpdateOne {
 	return _u
 }
 
+// SetVideoCount sets the "video_count" field.
+func (_u *UsageLogUpdateOne) SetVideoCount(v int) *UsageLogUpdateOne {
+	_u.mutation.ResetVideoCount()
+	_u.mutation.SetVideoCount(v)
+	return _u
+}
+
+// SetNillableVideoCount sets the "video_count" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableVideoCount(v *int) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetVideoCount(*v)
+	}
+	return _u
+}
+
+// AddVideoCount adds value to the "video_count" field.
+func (_u *UsageLogUpdateOne) AddVideoCount(v int) *UsageLogUpdateOne {
+	_u.mutation.AddVideoCount(v)
+	return _u
+}
+
+// SetVideoResolution sets the "video_resolution" field.
+func (_u *UsageLogUpdateOne) SetVideoResolution(v string) *UsageLogUpdateOne {
+	_u.mutation.SetVideoResolution(v)
+	return _u
+}
+
+// SetNillableVideoResolution sets the "video_resolution" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableVideoResolution(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetVideoResolution(*v)
+	}
+	return _u
+}
+
+// ClearVideoResolution clears the value of the "video_resolution" field.
+func (_u *UsageLogUpdateOne) ClearVideoResolution() *UsageLogUpdateOne {
+	_u.mutation.ClearVideoResolution()
+	return _u
+}
+
+// SetVideoDurationSeconds sets the "video_duration_seconds" field.
+func (_u *UsageLogUpdateOne) SetVideoDurationSeconds(v int) *UsageLogUpdateOne {
+	_u.mutation.ResetVideoDurationSeconds()
+	_u.mutation.SetVideoDurationSeconds(v)
+	return _u
+}
+
+// SetNillableVideoDurationSeconds sets the "video_duration_seconds" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableVideoDurationSeconds(v *int) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetVideoDurationSeconds(*v)
+	}
+	return _u
+}
+
+// AddVideoDurationSeconds adds value to the "video_duration_seconds" field.
+func (_u *UsageLogUpdateOne) AddVideoDurationSeconds(v int) *UsageLogUpdateOne {
+	_u.mutation.AddVideoDurationSeconds(v)
+	return _u
+}
+
+// ClearVideoDurationSeconds clears the value of the "video_duration_seconds" field.
+func (_u *UsageLogUpdateOne) ClearVideoDurationSeconds() *UsageLogUpdateOne {
+	_u.mutation.ClearVideoDurationSeconds()
+	return _u
+}
+
 // SetCacheTTLOverridden sets the "cache_ttl_overridden" field.
 func (_u *UsageLogUpdateOne) SetCacheTTLOverridden(v bool) *UsageLogUpdateOne {
 	_u.mutation.SetCacheTTLOverridden(v)
@@ -2338,6 +2500,11 @@ func (_u *UsageLogUpdateOne) check() error {
 			return &ValidationError{Name: "image_size_source", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size_source": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.VideoResolution(); ok {
+		if err := usagelog.VideoResolutionValidator(v); err != nil {
+			return &ValidationError{Name: "video_resolution", err: fmt.Errorf(`ent: validator failed for field "UsageLog.video_resolution": %w`, err)}
+		}
+	}
 	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
 		return errors.New(`ent: clearing a required unique edge "UsageLog.user"`)
 	}
@@ -2586,6 +2753,27 @@ func (_u *UsageLogUpdateOne) sqlSave(ctx context.Context) (_node *UsageLog, err
 	if _u.mutation.ImageSizeBreakdownCleared() {
 		_spec.ClearField(usagelog.FieldImageSizeBreakdown, field.TypeJSON)
 	}
+	if value, ok := _u.mutation.VideoCount(); ok {
+		_spec.SetField(usagelog.FieldVideoCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedVideoCount(); ok {
+		_spec.AddField(usagelog.FieldVideoCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.VideoResolution(); ok {
+		_spec.SetField(usagelog.FieldVideoResolution, field.TypeString, value)
+	}
+	if _u.mutation.VideoResolutionCleared() {
+		_spec.ClearField(usagelog.FieldVideoResolution, field.TypeString)
+	}
+	if value, ok := _u.mutation.VideoDurationSeconds(); ok {
+		_spec.SetField(usagelog.FieldVideoDurationSeconds, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedVideoDurationSeconds(); ok {
+		_spec.AddField(usagelog.FieldVideoDurationSeconds, field.TypeInt, value)
+	}
+	if _u.mutation.VideoDurationSecondsCleared() {
+		_spec.ClearField(usagelog.FieldVideoDurationSeconds, field.TypeInt)
+	}
 	if value, ok := _u.mutation.CacheTTLOverridden(); ok {
 		_spec.SetField(usagelog.FieldCacheTTLOverridden, field.TypeBool, value)
 	}
diff --git a/backend/internal/repository/migrations_schema_integration_test.go b/backend/internal/repository/migrations_schema_integration_test.go
index 3235c7404a..7ef98dd700 100644
--- a/backend/internal/repository/migrations_schema_integration_test.go
+++ b/backend/internal/repository/migrations_schema_integration_test.go
@@ -49,6 +49,9 @@ func TestMigrationsRunner_IsIdempotent_AndSchemaIsUpToDate(t *testing.T) {
 	requireColumn(t, tx, "usage_logs", "image_output_size", "character varying", 32, true)
 	requireColumn(t, tx, "usage_logs", "image_size_source", "character varying", 16, true)
 	requireColumn(t, tx, "usage_logs", "image_size_breakdown", "jsonb", 0, true)
+	requireColumn(t, tx, "usage_logs", "video_count", "integer", 0, false)
+	requireColumn(t, tx, "usage_logs", "video_resolution", "character varying", 10, true)
+	requireColumn(t, tx, "usage_logs", "video_duration_seconds", "integer", 0, true)
 	requireConstraintDefinitionContains(
 		t,
 		tx,
@@ -68,6 +71,7 @@ func TestMigrationsRunner_IsIdempotent_AndSchemaIsUpToDate(t *testing.T) {
 		"image_count",
 		"billing_mode",
 		"'video'",
+		"video_count",
 		"image_size IS NOT NULL",
 		"'1K'",
 		"'2K'",
diff --git a/backend/internal/repository/usage_log_repo_insert.go b/backend/internal/repository/usage_log_repo_insert.go
index bb978ddc1a..dfd8969512 100644
--- a/backend/internal/repository/usage_log_repo_insert.go
+++ b/backend/internal/repository/usage_log_repo_insert.go
@@ -63,6 +63,9 @@ var usageLogInsertArgTypes = [...]string{
 	"text",        // image_output_size
 	"text",        // image_size_source
 	"jsonb",       // image_size_breakdown
+	"integer",     // video_count
+	"text",        // video_resolution
+	"integer",     // video_duration_seconds
 	"text",        // service_tier
 	"text",        // reasoning_effort
 	"text",        // inbound_endpoint
@@ -252,6 +255,9 @@ func (r *usageLogRepository) createSingle(ctx context.Context, sqlq sqlExecutor,
 			image_output_size,
 			image_size_source,
 			image_size_breakdown,
+			video_count,
+			video_resolution,
+			video_duration_seconds,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -269,7 +275,7 @@ func (r *usageLogRepository) createSingle(ctx context.Context, sqlq sqlExecutor,
 			$10, $11, $12, $13,
 			$14, $15, $16, $17,
 			$18, $19, $20, $21, $22, $23,
-			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46, $47, $48, $49, $50
+			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46, $47, $48, $49, $50, $51, $52, $53
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 		RETURNING id, created_at
@@ -700,6 +706,9 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 			image_output_size,
 			image_size_source,
 			image_size_breakdown,
+			video_count,
+			video_resolution,
+			video_duration_seconds,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -713,7 +722,7 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 			created_at
 		) AS (VALUES `)
 
-	args := make([]any, 0, len(keys)*50)
+	args := make([]any, 0, len(keys)*53)
 	argPos := 1
 	for idx, key := range keys {
 		if idx > 0 {
@@ -781,6 +790,9 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 				image_output_size,
 				image_size_source,
 				image_size_breakdown,
+				video_count,
+				video_resolution,
+				video_duration_seconds,
 				service_tier,
 				reasoning_effort,
 				inbound_endpoint,
@@ -833,6 +845,9 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 				image_output_size,
 				image_size_source,
 				image_size_breakdown,
+				video_count,
+				video_resolution,
+				video_duration_seconds,
 				service_tier,
 				reasoning_effort,
 				inbound_endpoint,
@@ -925,6 +940,9 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			image_output_size,
 			image_size_source,
 			image_size_breakdown,
+			video_count,
+			video_resolution,
+			video_duration_seconds,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -938,7 +956,7 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			created_at
 		) AS (VALUES `)
 
-	args := make([]any, 0, len(preparedList)*50)
+	args := make([]any, 0, len(preparedList)*53)
 	argPos := 1
 	for idx, prepared := range preparedList {
 		if idx > 0 {
@@ -1003,6 +1021,9 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			image_output_size,
 			image_size_source,
 			image_size_breakdown,
+			video_count,
+			video_resolution,
+			video_duration_seconds,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1055,6 +1076,9 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			image_output_size,
 			image_size_source,
 			image_size_breakdown,
+			video_count,
+			video_resolution,
+			video_duration_seconds,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1115,6 +1139,9 @@ func execUsageLogInsertNoResult(ctx context.Context, sqlq sqlExecutor, prepared
 			image_output_size,
 			image_size_source,
 			image_size_breakdown,
+			video_count,
+			video_resolution,
+			video_duration_seconds,
 			service_tier,
 			reasoning_effort,
 			inbound_endpoint,
@@ -1132,7 +1159,7 @@ func execUsageLogInsertNoResult(ctx context.Context, sqlq sqlExecutor, prepared
 			$10, $11, $12, $13,
 			$14, $15, $16, $17,
 			$18, $19, $20, $21, $22, $23,
-			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46, $47, $48, $49, $50
+			$24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44, $45, $46, $47, $48, $49, $50, $51, $52, $53
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 	`, prepared.args...)
@@ -1163,6 +1190,8 @@ func prepareUsageLogInsert(log *service.UsageLog) usageLogInsertPrepared {
 	imageOutputSize := nullString(log.ImageOutputSize)
 	imageSizeSource := nullString(log.ImageSizeSource)
 	imageSizeBreakdown := nullStringIntMapJSON(log.ImageSizeBreakdown)
+	videoResolution := nullString(log.VideoResolution)
+	videoDurationSeconds := nullInt(log.VideoDurationSeconds)
 	serviceTier := nullString(log.ServiceTier)
 	reasoningEffort := nullString(log.ReasoningEffort)
 	inboundEndpoint := nullString(log.InboundEndpoint)
@@ -1227,6 +1256,9 @@ func prepareUsageLogInsert(log *service.UsageLog) usageLogInsertPrepared {
 			imageOutputSize,
 			imageSizeSource,
 			imageSizeBreakdown,
+			log.VideoCount,
+			videoResolution,
+			videoDurationSeconds,
 			serviceTier,
 			reasoningEffort,
 			inboundEndpoint,
diff --git a/backend/internal/repository/usage_log_repo_query.go b/backend/internal/repository/usage_log_repo_query.go
index 0ff4aeb936..c178429bab 100644
--- a/backend/internal/repository/usage_log_repo_query.go
+++ b/backend/internal/repository/usage_log_repo_query.go
@@ -19,7 +19,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/internal/service"
 )
 
-const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, requested_model, upstream_model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, image_output_tokens, image_output_cost, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, request_type, stream, openai_ws_mode, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, image_input_size, image_output_size, image_size_source, image_size_breakdown, service_tier, reasoning_effort, inbound_endpoint, upstream_endpoint, cache_ttl_overridden, channel_id, model_mapping_chain, billing_tier, billing_mode, account_stats_cost, created_at"
+const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, requested_model, upstream_model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, image_output_tokens, image_output_cost, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, request_type, stream, openai_ws_mode, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, image_input_size, image_output_size, image_size_source, image_size_breakdown, video_count, video_resolution, video_duration_seconds, service_tier, reasoning_effort, inbound_endpoint, upstream_endpoint, cache_ttl_overridden, channel_id, model_mapping_chain, billing_tier, billing_mode, account_stats_cost, created_at"
 
 func (r *usageLogRepository) GetByID(ctx context.Context, id int64) (log *service.UsageLog, err error) {
 	query := "SELECT " + usageLogSelectColumns + " FROM usage_logs WHERE id = $1"
@@ -465,6 +465,9 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		imageOutputSize       sql.NullString
 		imageSizeSource       sql.NullString
 		imageSizeBreakdown    sql.NullString
+		videoCount            int
+		videoResolution       sql.NullString
+		videoDurationSeconds  sql.NullInt64
 		serviceTier           sql.NullString
 		reasoningEffort       sql.NullString
 		inboundEndpoint       sql.NullString
@@ -519,6 +522,9 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		&imageOutputSize,
 		&imageSizeSource,
 		&imageSizeBreakdown,
+		&videoCount,
+		&videoResolution,
+		&videoDurationSeconds,
 		&serviceTier,
 		&reasoningEffort,
 		&inboundEndpoint,
@@ -560,6 +566,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		BillingType:           int8(billingType),
 		RequestType:           service.RequestTypeFromInt16(requestTypeRaw),
 		ImageCount:            imageCount,
+		VideoCount:            videoCount,
 		CacheTTLOverridden:    cacheTTLOverridden,
 		CreatedAt:             createdAt,
 	}
@@ -607,6 +614,13 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		log.ImageSizeSource = &imageSizeSource.String
 	}
 	log.ImageSizeBreakdown = stringIntMapFromNullJSON(imageSizeBreakdown)
+	if videoResolution.Valid {
+		log.VideoResolution = &videoResolution.String
+	}
+	if videoDurationSeconds.Valid {
+		value := int(videoDurationSeconds.Int64)
+		log.VideoDurationSeconds = &value
+	}
 	if serviceTier.Valid {
 		log.ServiceTier = &serviceTier.String
 	}
diff --git a/backend/internal/repository/usage_log_repo_request_type_test.go b/backend/internal/repository/usage_log_repo_request_type_test.go
index 4a32557e71..c32ad2b63f 100644
--- a/backend/internal/repository/usage_log_repo_request_type_test.go
+++ b/backend/internal/repository/usage_log_repo_request_type_test.go
@@ -80,6 +80,9 @@ func TestUsageLogRepositoryCreateSyncRequestTypeAndLegacyFields(t *testing.T) {
 			sqlmock.AnyArg(), // image_output_size
 			sqlmock.AnyArg(), // image_size_source
 			sqlmock.AnyArg(), // image_size_breakdown
+			sqlmock.AnyArg(), // video_count
+			sqlmock.AnyArg(), // video_resolution
+			sqlmock.AnyArg(), // video_duration_seconds
 			sqlmock.AnyArg(), // service_tier
 			sqlmock.AnyArg(), // reasoning_effort
 			sqlmock.AnyArg(), // inbound_endpoint
@@ -163,6 +166,9 @@ func TestUsageLogRepositoryCreate_PersistsServiceTier(t *testing.T) {
 			sqlmock.AnyArg(), // image_output_size
 			sqlmock.AnyArg(), // image_size_source
 			sqlmock.AnyArg(), // image_size_breakdown
+			sqlmock.AnyArg(), // video_count
+			sqlmock.AnyArg(), // video_resolution
+			sqlmock.AnyArg(), // video_duration_seconds
 			serviceTier,
 			sqlmock.AnyArg(),
 			sqlmock.AnyArg(),
@@ -799,6 +805,9 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{Valid: true, String: "3840x2160"},
 			sql.NullString{Valid: true, String: "output"},
 			sql.NullString{Valid: true, String: `{"4K":2}`},
+			0,                // video_count
+			sql.NullString{}, // video_resolution
+			sql.NullInt64{},  // video_duration_seconds
 			sql.NullString{},
 			sql.NullString{},
 			sql.NullString{},
@@ -867,6 +876,9 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{}, // image_output_size
 			sql.NullString{}, // image_size_source
 			sql.NullString{}, // image_size_breakdown
+			0,                // video_count
+			sql.NullString{}, // video_resolution
+			sql.NullInt64{},  // video_duration_seconds
 			sql.NullString{Valid: true, String: "priority"},
 			sql.NullString{},
 			sql.NullString{},
@@ -919,6 +931,9 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{}, // image_output_size
 			sql.NullString{}, // image_size_source
 			sql.NullString{}, // image_size_breakdown
+			0,                // video_count
+			sql.NullString{}, // video_resolution
+			sql.NullInt64{},  // video_duration_seconds
 			sql.NullString{Valid: true, String: "flex"},
 			sql.NullString{},
 			sql.NullString{},
@@ -971,6 +986,9 @@ func TestScanUsageLogRequestTypeAndLegacyFallback(t *testing.T) {
 			sql.NullString{}, // image_output_size
 			sql.NullString{}, // image_size_source
 			sql.NullString{}, // image_size_breakdown
+			0,                // video_count
+			sql.NullString{}, // video_resolution
+			sql.NullInt64{},  // video_duration_seconds
 			sql.NullString{Valid: true, String: "priority"},
 			sql.NullString{},
 			sql.NullString{},
diff --git a/backend/internal/service/billing_service.go b/backend/internal/service/billing_service.go
index a17b68fe12..4b17ab3c07 100644
--- a/backend/internal/service/billing_service.go
+++ b/backend/internal/service/billing_service.go
@@ -1231,11 +1231,11 @@ type ImagePriceConfig struct {
 	Price4K *float64 // 4K 尺寸价格（nil 表示使用默认值）
 }
 
-// VideoPriceConfig 视频生成计费配置。
+// VideoPriceConfig 视频生成计费配置。所有价格均为**每秒**单价（USD/s），与 xAI 官方计费口径一致。
 type VideoPriceConfig struct {
-	Price480P  *float64 // 480p 视频价格（nil 表示使用默认值）
-	Price720P  *float64 // 720p 视频价格（nil 表示使用默认值）
-	Price1080P *float64 // 1080p 视频价格（nil 表示使用默认值）
+	Price480P  *float64 // 480p 每秒价格（nil 表示使用默认值）
+	Price720P  *float64 // 720p 每秒价格（nil 表示使用默认值）
+	Price1080P *float64 // 1080p 每秒价格（nil 表示使用默认值）
 }
 
 const (
@@ -1246,6 +1246,7 @@ const (
 	defaultGrokImagineImageQualityPrice1K = 0.05
 	defaultGrokImagineImageQualityPrice2K = 0.07
 
+	// 视频默认价为 xAI 官方**每秒**输出价格（USD/s），总价 = 每秒价 × 时长（秒）。
 	defaultGrokImagineVideoPrice480P    = 0.05
 	defaultGrokImagineVideoPrice720P    = 0.07
 	defaultGrokImagineVideo15Price480P  = 0.08
@@ -1284,20 +1285,22 @@ func (s *BillingService) CalculateImageCost(model string, imageSize string, imag
 	}
 }
 
-// CalculateVideoCost 计算视频生成费用。
+// CalculateVideoCost 计算视频生成费用（按秒计费，与 xAI 口径一致）。
 // model: 请求的模型名称（用于获取默认价格）
 // resolution: 视频分辨率 "480p", "720p", "1080p"
 // videoCount: 生成的视频数量
-// groupConfig: 分组配置的价格（可能为 nil，表示使用默认值）
+// durationSeconds: 单个视频时长（秒），<=0 时按上游默认时长计
+// groupConfig: 分组配置的每秒价格（可能为 nil，表示使用默认值）
 // rateMultiplier: 费率倍数
-func (s *BillingService) CalculateVideoCost(model string, resolution string, videoCount int, groupConfig *VideoPriceConfig, rateMultiplier float64) *CostBreakdown {
+func (s *BillingService) CalculateVideoCost(model string, resolution string, videoCount int, durationSeconds int, groupConfig *VideoPriceConfig, rateMultiplier float64) *CostBreakdown {
 	if videoCount <= 0 {
 		return &CostBreakdown{}
 	}
 	resolution = NormalizeVideoBillingResolutionOrDefault(resolution)
+	durationSeconds = NormalizeVideoBillingDurationSecondsOrDefault(durationSeconds)
 
-	unitPrice := s.getVideoUnitPrice(model, resolution, groupConfig)
-	totalCost := unitPrice * float64(videoCount)
+	perSecondPrice := s.getVideoUnitPrice(model, resolution, groupConfig)
+	totalCost := perSecondPrice * float64(durationSeconds) * float64(videoCount)
 
 	if rateMultiplier < 0 {
 		rateMultiplier = 0
@@ -1394,8 +1397,9 @@ func (s *BillingService) getDefaultVideoPrice(model string, resolution string) f
 	}
 
 	// The bundled LiteLLM schema does not expose an output video generation price.
-	// Keep the historical model default as the fallback, while letting group-level
-	// video prices override it independently from image prices.
+	// Keep the historical model default as the fallback (interpreted as a per-second
+	// rate; today only Grok models reach video billing, so this path is a safety net),
+	// while letting group-level video prices override it independently from image prices.
 	return s.getDefaultImagePrice(model, ImageBillingSize2K)
 }
 
diff --git a/backend/internal/service/billing_service_test.go b/backend/internal/service/billing_service_test.go
index f4c4213533..954de478d9 100644
--- a/backend/internal/service/billing_service_test.go
+++ b/backend/internal/service/billing_service_test.go
@@ -878,14 +878,29 @@ func TestCalculateVideoCostUsesSeparateConfig(t *testing.T) {
 	imagePrice := 0.4
 	videoPrice := 0.08
 	imageCost := svc.CalculateImageCost("grok-imagine-video", "2K", 1, &ImagePriceConfig{Price2K: &imagePrice}, 1.0)
-	videoCost := svc.CalculateVideoCost("grok-imagine-video", "480p", 1, &VideoPriceConfig{Price480P: &videoPrice}, 0.5)
+	videoCost := svc.CalculateVideoCost("grok-imagine-video", "480p", 1, 10, &VideoPriceConfig{Price480P: &videoPrice}, 0.5)
 
 	require.InDelta(t, 0.4, imageCost.TotalCost, 1e-10)
-	require.InDelta(t, 0.08, videoCost.TotalCost, 1e-10)
-	require.InDelta(t, 0.04, videoCost.ActualCost, 1e-10)
+	require.InDelta(t, 0.8, videoCost.TotalCost, 1e-10)
+	require.InDelta(t, 0.4, videoCost.ActualCost, 1e-10)
 	require.Equal(t, string(BillingModeVideo), videoCost.BillingMode)
 }
 
+func TestCalculateVideoCostBillsPerSecond(t *testing.T) {
+	svc := newTestBillingService()
+
+	oneSecond := svc.CalculateVideoCost("grok-imagine-video", "720p", 1, 1, nil, 1.0)
+	fifteenSeconds := svc.CalculateVideoCost("grok-imagine-video", "720p", 1, 15, nil, 1.0)
+	// duration <=0 时按上游默认 8 秒计费，超出上限按 15 秒收敛。
+	defaultDuration := svc.CalculateVideoCost("grok-imagine-video", "720p", 1, 0, nil, 1.0)
+	clampedDuration := svc.CalculateVideoCost("grok-imagine-video", "720p", 1, 999, nil, 1.0)
+
+	require.InDelta(t, 0.07, oneSecond.TotalCost, 1e-10)
+	require.InDelta(t, 0.07*15, fifteenSeconds.TotalCost, 1e-10)
+	require.InDelta(t, 0.07*8, defaultDuration.TotalCost, 1e-10)
+	require.InDelta(t, 0.07*15, clampedDuration.TotalCost, 1e-10)
+}
+
 func TestCalculateGrokImagineImageCostUsesDefaultRateCard(t *testing.T) {
 	svc := newTestBillingService()
 
@@ -903,11 +918,12 @@ func TestCalculateGrokImagineImageCostUsesDefaultRateCard(t *testing.T) {
 func TestCalculateGrokImagineVideoCostUsesDefaultRateCard(t *testing.T) {
 	svc := newTestBillingService()
 
-	standard480P := svc.CalculateVideoCost("grok-imagine-video", "480p", 1, nil, 1.0)
-	standard720P := svc.CalculateVideoCost("grok-imagine-video", "720p", 1, nil, 1.0)
-	video15_480P := svc.CalculateVideoCost("grok-imagine-video-1.5", "480p", 1, nil, 1.0)
-	video15_720P := svc.CalculateVideoCost("grok-imagine-video-1.5", "720p", 1, nil, 1.0)
-	video15_1080P := svc.CalculateVideoCost("grok-imagine-video-1.5", "1080p", 1, nil, 1.0)
+	// 默认价目为 xAI 官方每秒价格，按 1 秒时长验证每秒单价。
+	standard480P := svc.CalculateVideoCost("grok-imagine-video", "480p", 1, 1, nil, 1.0)
+	standard720P := svc.CalculateVideoCost("grok-imagine-video", "720p", 1, 1, nil, 1.0)
+	video15_480P := svc.CalculateVideoCost("grok-imagine-video-1.5", "480p", 1, 1, nil, 1.0)
+	video15_720P := svc.CalculateVideoCost("grok-imagine-video-1.5", "720p", 1, 1, nil, 1.0)
+	video15_1080P := svc.CalculateVideoCost("grok-imagine-video-1.5", "1080p", 1, 1, nil, 1.0)
 
 	require.InDelta(t, 0.05, standard480P.TotalCost, 1e-10)
 	require.InDelta(t, 0.07, standard720P.TotalCost, 1e-10)
diff --git a/backend/internal/service/grok_media.go b/backend/internal/service/grok_media.go
index 70e439e46e..40ad54276c 100644
--- a/backend/internal/service/grok_media.go
+++ b/backend/internal/service/grok_media.go
@@ -43,16 +43,17 @@ func (e GrokMediaEndpoint) IsGenerationRequest() bool {
 }
 
 type GrokMediaRequestInfo struct {
-	Model          string
-	Prompt         string
-	N              int
-	Size           string
-	SizeTier       string
-	Resolution     string
-	InputImageURLs []string
-	MaskImageURL   string
-	Uploads        []OpenAIImagesUpload
-	MaskUpload     *OpenAIImagesUpload
+	Model           string
+	Prompt          string
+	N               int
+	Size            string
+	SizeTier        string
+	Resolution      string
+	DurationSeconds int
+	InputImageURLs  []string
+	MaskImageURL    string
+	Uploads         []OpenAIImagesUpload
+	MaskUpload      *OpenAIImagesUpload
 }
 
 func (r GrokMediaRequestInfo) ModerationBody() []byte {
@@ -116,6 +117,7 @@ func ParseGrokMediaRequest(contentType string, body []byte) GrokMediaRequestInfo
 	info.Size = strings.TrimSpace(info.Size)
 	info.SizeTier = NormalizeImageBillingTierOrDefault(info.Size)
 	info.Resolution = NormalizeVideoBillingResolutionOrDefault(info.Resolution)
+	info.DurationSeconds = NormalizeVideoBillingDurationSecondsOrDefault(info.DurationSeconds)
 	if info.N <= 0 {
 		info.N = 1
 	}
@@ -130,6 +132,9 @@ func parseGrokMediaJSONRequest(body []byte, info *GrokMediaRequestInfo) {
 	info.Prompt = strings.TrimSpace(gjson.GetBytes(body, "prompt").String())
 	info.Size = strings.TrimSpace(gjson.GetBytes(body, "size").String())
 	info.Resolution = strings.TrimSpace(gjson.GetBytes(body, "resolution").String())
+	if duration := gjson.GetBytes(body, "duration"); duration.Exists() && duration.Type == gjson.Number {
+		info.DurationSeconds = int(duration.Int())
+	}
 	if n := gjson.GetBytes(body, "n"); n.Exists() && n.Type == gjson.Number {
 		info.N = int(n.Int())
 	}
@@ -231,6 +236,10 @@ func parseGrokMediaMultipartRequest(contentType string, body []byte, info *GrokM
 			info.Size = value
 		case "resolution":
 			info.Resolution = value
+		case "duration":
+			if duration, err := strconv.Atoi(value); err == nil {
+				info.DurationSeconds = duration
+			}
 		case "n":
 			if n, err := strconv.Atoi(value); err == nil {
 				info.N = n
@@ -356,20 +365,21 @@ func (s *OpenAIGatewayService) ForwardGrokMedia(
 	writeGrokMediaResponse(c, resp, respBody, s.responseHeaderFilter)
 	usage := grokMediaUsageFromResponse(endpoint, requestInfo, respBody)
 	return &OpenAIForwardResult{
-		RequestID:        requestIDHeader,
-		ResponseID:       usage.ResponseID,
-		Usage:            usage.Usage,
-		Model:            requestModel,
-		BillingModel:     requestModel,
-		UpstreamModel:    requestModel,
-		ResponseHeaders:  resp.Header.Clone(),
-		Duration:         time.Since(startTime),
-		ImageCount:       usage.ImageCount,
-		ImageSize:        usage.ImageSize,
-		ImageInputSize:   usage.ImageInputSize,
-		ImageOutputSizes: usage.ImageOutputSizes,
-		VideoCount:       usage.VideoCount,
-		VideoResolution:  usage.VideoResolution,
+		RequestID:            requestIDHeader,
+		ResponseID:           usage.ResponseID,
+		Usage:                usage.Usage,
+		Model:                requestModel,
+		BillingModel:         requestModel,
+		UpstreamModel:        requestModel,
+		ResponseHeaders:      resp.Header.Clone(),
+		Duration:             time.Since(startTime),
+		ImageCount:           usage.ImageCount,
+		ImageSize:            usage.ImageSize,
+		ImageInputSize:       usage.ImageInputSize,
+		ImageOutputSizes:     usage.ImageOutputSizes,
+		VideoCount:           usage.VideoCount,
+		VideoResolution:      usage.VideoResolution,
+		VideoDurationSeconds: usage.VideoDurationSeconds,
 	}, nil
 }
 
@@ -472,14 +482,15 @@ func normalizeGrokMediaModelForEndpoint(endpoint GrokMediaEndpoint, model string
 }
 
 type grokMediaUsageMetadata struct {
-	ResponseID       string
-	Usage            OpenAIUsage
-	ImageCount       int
-	ImageSize        string
-	ImageInputSize   string
-	ImageOutputSizes []string
-	VideoCount       int
-	VideoResolution  string
+	ResponseID           string
+	Usage                OpenAIUsage
+	ImageCount           int
+	ImageSize            string
+	ImageInputSize       string
+	ImageOutputSizes     []string
+	VideoCount           int
+	VideoResolution      string
+	VideoDurationSeconds int
 }
 
 func grokMediaUsageFromResponse(endpoint GrokMediaEndpoint, requestInfo GrokMediaRequestInfo, responseBody []byte) grokMediaUsageMetadata {
@@ -502,6 +513,7 @@ func grokMediaUsageFromResponse(endpoint GrokMediaEndpoint, requestInfo GrokMedi
 		meta.ResponseID = extractGrokMediaVideoRequestID(responseBody)
 		meta.VideoCount = 1
 		meta.VideoResolution = requestInfo.Resolution
+		meta.VideoDurationSeconds = requestInfo.DurationSeconds
 		// Keep the legacy media-unit counter populated for existing usage displays.
 		meta.ImageCount = 1
 	}
diff --git a/backend/internal/service/openai_gateway_grok_test.go b/backend/internal/service/openai_gateway_grok_test.go
index c7d1cd552c..e47ffeb6cb 100644
--- a/backend/internal/service/openai_gateway_grok_test.go
+++ b/backend/internal/service/openai_gateway_grok_test.go
@@ -337,7 +337,7 @@ func TestForwardGrokMediaVideoGenerationReturnsUsageAndResponseID(t *testing.T)
 
 	recorder := httptest.NewRecorder()
 	c, _ := gin.CreateTestContext(recorder)
-	body := []byte(`{"model":"grok-imagine-video-1.5","prompt":"waves","resolution":"720p"}`)
+	body := []byte(`{"model":"grok-imagine-video-1.5","prompt":"waves","resolution":"720p","duration":10}`)
 	c.Request = httptest.NewRequest(http.MethodPost, "/v1/videos/generations", bytes.NewReader(body))
 	c.Request.Header.Set("Content-Type", "application/json")
 
@@ -365,7 +365,7 @@ func TestForwardGrokMediaVideoGenerationReturnsUsageAndResponseID(t *testing.T)
 	result, err := svc.ForwardGrokMedia(context.Background(), c, account, GrokMediaEndpointVideosGenerations, "", body, "application/json")
 	require.NoError(t, err)
 	require.Equal(t, "https://xai.test/v1/videos/generations", upstream.lastReq.URL.String())
-	require.JSONEq(t, `{"model":"grok-imagine-video","prompt":"waves","resolution":"720p"}`, string(upstream.lastBody))
+	require.JSONEq(t, `{"model":"grok-imagine-video","prompt":"waves","resolution":"720p","duration":10}`, string(upstream.lastBody))
 	require.Equal(t, "video-request-123", result.ResponseID)
 	require.Equal(t, "grok-imagine-video", result.BillingModel)
 	require.Equal(t, 3, result.Usage.InputTokens)
@@ -374,6 +374,7 @@ func TestForwardGrokMediaVideoGenerationReturnsUsageAndResponseID(t *testing.T)
 	require.Empty(t, result.ImageSize)
 	require.Equal(t, 1, result.VideoCount)
 	require.Equal(t, VideoBillingResolution720P, result.VideoResolution)
+	require.Equal(t, 10, result.VideoDurationSeconds)
 }
 
 func TestForwardGrokMediaVideoGenerationPreservesImageToVideoModel(t *testing.T) {
@@ -412,6 +413,8 @@ func TestForwardGrokMediaVideoGenerationPreservesImageToVideoModel(t *testing.T)
 	require.JSONEq(t, `{"model":"grok-imagine-video-1.5","prompt":"animate","image":{"image_url":"data:image/png;base64,aW1n"}}`, string(upstream.lastBody))
 	require.Equal(t, "video-request-456", result.ResponseID)
 	require.Equal(t, "grok-imagine-video-1.5", result.BillingModel)
+	// 未指定 duration 时按上游默认 8 秒计费。
+	require.Equal(t, VideoBillingDefaultDurationSeconds, result.VideoDurationSeconds)
 }
 
 func TestForwardGrokMediaVideoStatusUsesGETWithoutBody(t *testing.T) {
diff --git a/backend/internal/service/openai_gateway_record_usage_test.go b/backend/internal/service/openai_gateway_record_usage_test.go
index c3622a82e9..b9bbd137c6 100644
--- a/backend/internal/service/openai_gateway_record_usage_test.go
+++ b/backend/internal/service/openai_gateway_record_usage_test.go
@@ -1813,14 +1813,15 @@ func TestGrokVideoBillingUsesSeparateVideoRateMultiplier(t *testing.T) {
 
 	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
 		Result: &OpenAIForwardResult{
-			RequestID:       "video-request-123",
-			ResponseID:      "video-request-123",
-			Model:           "grok-imagine-video-1.5",
-			BillingModel:    "grok-imagine-video-1.5",
-			ImageCount:      1,
-			VideoCount:      1,
-			VideoResolution: VideoBillingResolution480P,
-			Duration:        time.Second,
+			RequestID:            "video-request-123",
+			ResponseID:           "video-request-123",
+			Model:                "grok-imagine-video-1.5",
+			BillingModel:         "grok-imagine-video-1.5",
+			ImageCount:           1,
+			VideoCount:           1,
+			VideoResolution:      VideoBillingResolution480P,
+			VideoDurationSeconds: 1,
+			Duration:             time.Second,
 		},
 		APIKey: &APIKey{
 			ID:      10126,
@@ -1851,6 +1852,11 @@ func TestGrokVideoBillingUsesSeparateVideoRateMultiplier(t *testing.T) {
 	require.InDelta(t, 0.25, usageRepo.lastLog.RateMultiplier, 1e-12)
 	require.NotNil(t, usageRepo.lastLog.BillingMode)
 	require.Equal(t, string(BillingModeVideo), *usageRepo.lastLog.BillingMode)
+	require.Equal(t, 1, usageRepo.lastLog.VideoCount)
+	require.NotNil(t, usageRepo.lastLog.VideoResolution)
+	require.Equal(t, VideoBillingResolution480P, *usageRepo.lastLog.VideoResolution)
+	require.NotNil(t, usageRepo.lastLog.VideoDurationSeconds)
+	require.Equal(t, 1, *usageRepo.lastLog.VideoDurationSeconds)
 }
 
 func TestOpenAIGatewayServiceRecordUsage_GrokVideoUsesDefaultRateCard(t *testing.T) {
@@ -1885,11 +1891,15 @@ func TestOpenAIGatewayServiceRecordUsage_GrokVideoUsesDefaultRateCard(t *testing
 	require.NoError(t, err)
 	require.NotNil(t, usageRepo.lastLog)
 	require.Nil(t, usageRepo.lastLog.ImageSize)
-	require.InDelta(t, 0.14, usageRepo.lastLog.TotalCost, 1e-12)
-	require.InDelta(t, 0.14, usageRepo.lastLog.ActualCost, 1e-12)
+	// 结果未携带 duration 时按上游默认 8 秒计费：0.14 USD/s × 8s。
+	require.InDelta(t, 0.14*8, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, 0.14*8, usageRepo.lastLog.ActualCost, 1e-12)
 	require.Equal(t, 1, usageRepo.lastLog.ImageCount)
 	require.NotNil(t, usageRepo.lastLog.BillingMode)
 	require.Equal(t, string(BillingModeVideo), *usageRepo.lastLog.BillingMode)
+	require.Equal(t, 1, usageRepo.lastLog.VideoCount)
+	require.NotNil(t, usageRepo.lastLog.VideoDurationSeconds)
+	require.Equal(t, VideoBillingDefaultDurationSeconds, *usageRepo.lastLog.VideoDurationSeconds)
 }
 
 func TestOpenAIGatewayServiceRecordUsage_GroupImagePriceOverridesChannelImagePrice(t *testing.T) {
@@ -1945,13 +1955,14 @@ func TestOpenAIGatewayServiceRecordUsage_GroupVideoPriceOverridesChannelImagePri
 
 	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
 		Result: &OpenAIForwardResult{
-			RequestID:       "resp_grok_video_group_price",
-			Model:           "grok-imagine-video",
-			BillingModel:    "grok-imagine-video",
-			ImageCount:      1,
-			VideoCount:      1,
-			VideoResolution: VideoBillingResolution720P,
-			Duration:        time.Second,
+			RequestID:            "resp_grok_video_group_price",
+			Model:                "grok-imagine-video",
+			BillingModel:         "grok-imagine-video",
+			ImageCount:           1,
+			VideoCount:           1,
+			VideoResolution:      VideoBillingResolution720P,
+			VideoDurationSeconds: 1,
+			Duration:             time.Second,
 		},
 		APIKey: &APIKey{
 			ID:      10128,
@@ -2046,13 +2057,14 @@ func TestOpenAIGatewayServiceRecordUsage_HydratesGroupVideoPriceWhenAuthSnapshot
 
 	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
 		Result: &OpenAIForwardResult{
-			RequestID:       "resp_grok_video_hydrated_price",
-			Model:           "grok-imagine-video",
-			BillingModel:    "grok-imagine-video",
-			ImageCount:      1,
-			VideoCount:      1,
-			VideoResolution: VideoBillingResolution720P,
-			Duration:        time.Second,
+			RequestID:            "resp_grok_video_hydrated_price",
+			Model:                "grok-imagine-video",
+			BillingModel:         "grok-imagine-video",
+			ImageCount:           1,
+			VideoCount:           1,
+			VideoResolution:      VideoBillingResolution720P,
+			VideoDurationSeconds: 1,
+			Duration:             time.Second,
 		},
 		APIKey: &APIKey{
 			ID:      10131,
@@ -2075,6 +2087,53 @@ func TestOpenAIGatewayServiceRecordUsage_HydratesGroupVideoPriceWhenAuthSnapshot
 	require.Equal(t, string(BillingModeVideo), *usageRepo.lastLog.BillingMode)
 }
 
+// 视频请求命中渠道 token 计费时走 token 路径；此时行是 billing_mode='token'、image_count=1、
+// image_size=NULL，必须携带 video_count>0 才能通过 usage_logs 的 image_size check 约束
+// （迁移 172），否则整个计费事务会因约束违反而丢失。
+func TestOpenAIGatewayServiceRecordUsage_GrokVideoWithTokenChannelPricingKeepsVideoMetadata(t *testing.T) {
+	groupID := int64(132)
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	svc := newOpenAIRecordUsageServiceForTest(usageRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{}, nil)
+	svc.resolver = newOpenAITokenImageChannelPricingResolverForTest(t, groupID, "grok-imagine-video")
+
+	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
+		Result: &OpenAIForwardResult{
+			RequestID:            "resp_grok_video_token_channel",
+			Model:                "grok-imagine-video",
+			BillingModel:         "grok-imagine-video",
+			ImageCount:           1,
+			VideoCount:           1,
+			VideoResolution:      VideoBillingResolution720P,
+			VideoDurationSeconds: 5,
+			Usage:                OpenAIUsage{InputTokens: 100, OutputTokens: 200},
+			Duration:             time.Second,
+		},
+		APIKey: &APIKey{
+			ID:      10132,
+			GroupID: i64p(groupID),
+			Group: &Group{
+				ID:             groupID,
+				Platform:       PlatformGrok,
+				RateMultiplier: 1,
+			},
+		},
+		User:    &User{ID: 20132},
+		Account: &Account{ID: 30132, Platform: PlatformGrok},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	require.NotNil(t, usageRepo.lastLog.BillingMode)
+	require.Equal(t, string(BillingModeToken), *usageRepo.lastLog.BillingMode)
+	require.Nil(t, usageRepo.lastLog.ImageSize)
+	require.Equal(t, 1, usageRepo.lastLog.ImageCount)
+	require.Equal(t, 1, usageRepo.lastLog.VideoCount)
+	require.NotNil(t, usageRepo.lastLog.VideoResolution)
+	require.Equal(t, VideoBillingResolution720P, *usageRepo.lastLog.VideoResolution)
+	require.NotNil(t, usageRepo.lastLog.VideoDurationSeconds)
+	require.Equal(t, 5, *usageRepo.lastLog.VideoDurationSeconds)
+}
+
 func TestOpenAIGatewayServiceRecordUsage_ChannelImageBillingUsesImageCountAndSharedMultiplier(t *testing.T) {
 	groupID := int64(123)
 	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
diff --git a/backend/internal/service/openai_gateway_service.go b/backend/internal/service/openai_gateway_service.go
index 822a5f65d3..af8ae3ffe5 100644
--- a/backend/internal/service/openai_gateway_service.go
+++ b/backend/internal/service/openai_gateway_service.go
@@ -244,6 +244,8 @@ type OpenAIForwardResult struct {
 	ImageSizeBreakdown map[string]int
 	VideoCount         int
 	VideoResolution    string
+	// VideoDurationSeconds 是提交时请求的生成时长（xAI 按输出秒数计费），已归一化到 1-15 秒。
+	VideoDurationSeconds int
 
 	wsReplayInput       []json.RawMessage
 	wsReplayInputExists bool
diff --git a/backend/internal/service/openai_gateway_usage.go b/backend/internal/service/openai_gateway_usage.go
index 569a7a74ba..4a16facccd 100644
--- a/backend/internal/service/openai_gateway_usage.go
+++ b/backend/internal/service/openai_gateway_usage.go
@@ -243,6 +243,12 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 		ImageSizeBreakdown:  result.ImageSizeBreakdown,
 	}
 	isVideoUsage := isGrokVideoUsageResult(result, billingModels)
+	if isVideoUsage {
+		usageLog.VideoCount = result.VideoCount
+		usageLog.VideoResolution = optionalTrimmedStringPtr(NormalizeVideoBillingResolutionOrDefault(result.VideoResolution))
+		videoDurationSeconds := NormalizeVideoBillingDurationSecondsOrDefault(result.VideoDurationSeconds)
+		usageLog.VideoDurationSeconds = &videoDurationSeconds
+	}
 	if cost != nil {
 		usageLog.InputCost = cost.InputCost
 		usageLog.OutputCost = cost.OutputCost
@@ -499,19 +505,21 @@ func (s *OpenAIGatewayService) calculateOpenAIVideoCost(
 		videoCount = 1
 	}
 	resolution := NormalizeVideoBillingResolutionOrDefault(result.VideoResolution)
+	durationSeconds := NormalizeVideoBillingDurationSecondsOrDefault(result.VideoDurationSeconds)
 	groupConfig := videoPriceConfigFromAPIKey(apiKey)
 	if apiKeyHasConfiguredVideoPrice(apiKey, resolution) {
-		return s.billingService.CalculateVideoCost(billingModel, resolution, videoCount, groupConfig, multiplier)
+		return s.billingService.CalculateVideoCost(billingModel, resolution, videoCount, durationSeconds, groupConfig, multiplier)
 	}
 	if refreshed := s.apiKeyWithFreshGroupMediaPricing(ctx, apiKey); refreshed != apiKey {
 		apiKey = refreshed
 		groupConfig = videoPriceConfigFromAPIKey(apiKey)
 		if apiKeyHasConfiguredVideoPrice(apiKey, resolution) {
-			return s.billingService.CalculateVideoCost(billingModel, resolution, videoCount, groupConfig, multiplier)
+			return s.billingService.CalculateVideoCost(billingModel, resolution, videoCount, durationSeconds, groupConfig, multiplier)
 		}
 	}
 	if resolved := s.resolveOpenAIChannelPricing(ctx, billingModel, apiKey); resolved != nil &&
 		(resolved.Mode == BillingModePerRequest || resolved.Mode == BillingModeImage) {
+		// 渠道 per_request/image 定价保持"按请求次数"口径（价格由管理员按次配置），不乘视频时长。
 		gid := apiKey.Group.ID
 		cost, err := s.billingService.CalculateCostUnified(CostInput{
 			Ctx:            ctx,
@@ -530,13 +538,16 @@ func (s *OpenAIGatewayService) calculateOpenAIVideoCost(
 		logger.LegacyPrintf("service.openai_gateway", "Calculate video channel cost failed: %v", err)
 	}
 
-	return s.billingService.CalculateVideoCost(billingModel, resolution, videoCount, groupConfig, multiplier)
+	return s.billingService.CalculateVideoCost(billingModel, resolution, videoCount, durationSeconds, groupConfig, multiplier)
 }
 
 func (s *OpenAIGatewayService) apiKeyWithFreshGroupMediaPricing(ctx context.Context, apiKey *APIKey) *APIKey {
 	if apiKey == nil || apiKey.GroupID == nil || *apiKey.GroupID <= 0 {
 		return apiKey
 	}
+	if !groupMediaPricingLooksIncomplete(apiKey.Group) {
+		return apiKey
+	}
 	if s == nil || s.channelService == nil || s.channelService.groupRepo == nil {
 		return apiKey
 	}
@@ -549,6 +560,24 @@ func (s *OpenAIGatewayService) apiKeyWithFreshGroupMediaPricing(ctx context.Cont
 	return &clone
 }
 
+// groupMediaPricingLooksIncomplete 判断分组对象是否可能缺失媒体计费字段（例如由不含
+// 这些字段的旧快照或手工构造的上下文对象生成）。image/video 独立倍率在数据库中的
+// 默认值均为 1.0，正常加载的分组不可能两个倍率同时为 0 且未开启独立倍率、全部媒体
+// 价为 nil——只有这种情况才回源查库，避免对未配置覆盖价的分组每条媒体用量都多打一次 DB 查询。
+func groupMediaPricingLooksIncomplete(group *Group) bool {
+	if group == nil {
+		return true
+	}
+	if group.ImageRateIndependent || group.VideoRateIndependent {
+		return false
+	}
+	if group.ImageRateMultiplier != 0 || group.VideoRateMultiplier != 0 {
+		return false
+	}
+	return group.ImagePrice1K == nil && group.ImagePrice2K == nil && group.ImagePrice4K == nil &&
+		group.VideoPrice480P == nil && group.VideoPrice720P == nil && group.VideoPrice1080P == nil
+}
+
 func (s *OpenAIGatewayService) resolveOpenAIChannelPricing(ctx context.Context, billingModel string, apiKey *APIKey) *ResolvedPricing {
 	if s.resolver == nil || apiKey == nil || apiKey.Group == nil {
 		return nil
diff --git a/backend/internal/service/usage_log.go b/backend/internal/service/usage_log.go
index 66cdb62b2b..62e48fc8f9 100644
--- a/backend/internal/service/usage_log.go
+++ b/backend/internal/service/usage_log.go
@@ -175,6 +175,11 @@ type UsageLog struct {
 	ImageSizeBreakdown map[string]int
 	MediaType          *string
 
+	// 视频生成字段（Grok 视频按秒计费；video_count>0 的行不要求 image_size）
+	VideoCount           int
+	VideoResolution      *string
+	VideoDurationSeconds *int
+
 	CreatedAt time.Time
 
 	User         *User
diff --git a/backend/internal/service/video_billing_resolution.go b/backend/internal/service/video_billing_resolution.go
index bca068f097..cb713f6877 100644
--- a/backend/internal/service/video_billing_resolution.go
+++ b/backend/internal/service/video_billing_resolution.go
@@ -8,6 +8,29 @@ const (
 	VideoBillingResolution1080P = "1080p"
 )
 
+// xAI 视频生成按秒计费，duration 请求参数允许 1-15 秒；未指定时上游默认生成 8 秒。
+// 计费时长必须与上游实际消耗对齐，否则用户可通过拉长 duration 套利（提交时长由用户控制）。
+const (
+	VideoBillingMinDurationSeconds     = 1
+	VideoBillingMaxDurationSeconds     = 15
+	VideoBillingDefaultDurationSeconds = 8
+)
+
+// NormalizeVideoBillingDurationSecondsOrDefault 归一化计费用视频时长：
+// 未指定（<=0）按上游默认 8 秒计，超出上游允许区间按边界收敛。
+func NormalizeVideoBillingDurationSecondsOrDefault(durationSeconds int) int {
+	if durationSeconds <= 0 {
+		return VideoBillingDefaultDurationSeconds
+	}
+	if durationSeconds < VideoBillingMinDurationSeconds {
+		return VideoBillingMinDurationSeconds
+	}
+	if durationSeconds > VideoBillingMaxDurationSeconds {
+		return VideoBillingMaxDurationSeconds
+	}
+	return durationSeconds
+}
+
 func NormalizeVideoBillingResolutionOrDefault(resolution string) string {
 	switch strings.ToLower(strings.TrimSpace(resolution)) {
 	case "480", "480p", "sd":
diff --git a/backend/migrations/172_video_per_second_billing_metadata.sql b/backend/migrations/172_video_per_second_billing_metadata.sql
new file mode 100644
index 0000000000..e54b83dafe
--- /dev/null
+++ b/backend/migrations/172_video_per_second_billing_metadata.sql
@@ -0,0 +1,38 @@
+-- Grok video billing is per second of generated output (xAI rate card), so usage
+-- rows must record the billed resolution and duration for auditability. The
+-- image-size check constraint must also exempt any video row by video_count
+-- instead of billing_mode='video' alone: a video request billed through a
+-- token-mode channel price produces billing_mode='token' with image_count=1
+-- (legacy media counter) and no image_size, which the previous constraint
+-- rejected and silently dropped the whole billing transaction.
+
+ALTER TABLE usage_logs
+    ADD COLUMN IF NOT EXISTS video_count INTEGER NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS video_resolution VARCHAR(10),
+    ADD COLUMN IF NOT EXISTS video_duration_seconds INTEGER;
+
+COMMENT ON COLUMN usage_logs.video_count IS '视频生成数量；>0 表示本行是视频生成用量';
+COMMENT ON COLUMN usage_logs.video_resolution IS '计费用视频分辨率 480p/720p/1080p';
+COMMENT ON COLUMN usage_logs.video_duration_seconds IS '提交时请求的视频时长（秒），按秒计费的乘数';
+
+ALTER TABLE usage_logs
+    DROP CONSTRAINT IF EXISTS usage_logs_image_billing_size_check;
+
+ALTER TABLE usage_logs
+    ADD CONSTRAINT usage_logs_image_billing_size_check
+    CHECK (
+        image_count <= 0
+        OR billing_mode = 'video'
+        OR COALESCE(video_count, 0) > 0
+        OR (
+            image_size IS NOT NULL
+            AND image_size IN ('1K', '2K', '4K', 'mixed')
+        )
+    ) NOT VALID;
+
+-- Group video prices are per-second rates (USD/s), matching the xAI rate card;
+-- total cost = per-second price x duration seconds. Clarify the column docs
+-- introduced by migration 170, which read as per-video prices.
+COMMENT ON COLUMN groups.video_price_480p IS '480p 视频生成每秒单价 (USD/s)，Grok 平台使用';
+COMMENT ON COLUMN groups.video_price_720p IS '720p 视频生成每秒单价 (USD/s)，Grok 平台使用';
+COMMENT ON COLUMN groups.video_price_1080p IS '1080p 视频生成每秒单价 (USD/s)，Grok 平台使用';
diff --git a/frontend/src/i18n/locales/en/admin/overview.ts b/frontend/src/i18n/locales/en/admin/overview.ts
index 545135d3a1..ffe9723126 100644
--- a/frontend/src/i18n/locales/en/admin/overview.ts
+++ b/frontend/src/i18n/locales/en/admin/overview.ts
@@ -841,26 +841,15 @@ export default {
         finalPricePreview: 'Final per-image price preview',
         notConfigured: 'Not configured'
       },
-      mediaPricing: {
-        title: 'Image / Video Generation Pricing',
-        description:
-          'Configure Grok image and video generation access plus base media prices. Leave empty to use default prices.',
-        allowImageGeneration: 'Allow image and video generation for this group',
-        independentMultiplier: 'Use independent media multiplier',
-        imageMultiplier: 'Media multiplier',
-        modeHint:
-          'By default, Grok media billing uses media price × current effective group multiplier. Independent mode uses media price × media multiplier. One video generation is billed as one media unit.',
-        finalPricePreview: 'Final per-media-unit price preview',
-        notConfigured: 'Not configured'
-      },
       videoPricing: {
         title: 'Video Generation Pricing',
-        description: 'Configure Grok video generation base prices. Leave empty to use default video prices.',
+        description:
+          'Configure Grok video generation prices in USD per second of output video. Leave empty to use the default per-second rates (grok-imagine-video: $0.05/s 480p, $0.07/s 720p; video-1.5: $0.08/s 480p, $0.14/s 720p, $0.25/s 1080p).',
         independentMultiplier: 'Use independent video multiplier',
         videoMultiplier: 'Video multiplier',
         modeHint:
-          'By default, video billing uses video price × current effective group multiplier. Independent mode uses video price × video multiplier.',
-        finalPricePreview: 'Final per-video price preview',
+          'Videos are billed per second: per-second price × duration (1-15s, default 8s). By default the current effective group multiplier applies; independent mode uses the video multiplier instead.',
+        finalPricePreview: 'Final per-second price preview',
         notConfigured: 'Not configured'
       },
       peakRate: {
diff --git a/frontend/src/i18n/locales/zh/admin/overview.ts b/frontend/src/i18n/locales/zh/admin/overview.ts
index b56fcde5d0..a40fe4afe2 100644
--- a/frontend/src/i18n/locales/zh/admin/overview.ts
+++ b/frontend/src/i18n/locales/zh/admin/overview.ts
@@ -919,25 +919,15 @@ export default {
         finalPricePreview: '最终单张价格预览',
         notConfigured: '未配置'
       },
-      mediaPricing: {
-        title: '图片/视频生成计费',
-        description: '配置 Grok 图片和视频生成能力及媒体基础单价，留空则使用默认价格',
-        allowImageGeneration: '允许当前分组生图和视频生成',
-        independentMultiplier: '媒体倍率独立',
-        imageMultiplier: '媒体独立倍率',
-        modeHint:
-          '默认关闭独立倍率时，Grok 媒体费用 = 媒体价格 × 当前分组有效倍率；开启独立倍率后，Grok 媒体费用 = 媒体价格 × 媒体独立倍率。一次视频生成按 1 个媒体单位计费。',
-        finalPricePreview: '最终单次媒体价格预览',
-        notConfigured: '未配置'
-      },
       videoPricing: {
         title: '视频生成计费',
-        description: '配置 Grok 视频生成基础单价，留空则使用默认视频价格',
+        description:
+          '配置 Grok 视频生成的每秒单价（USD/秒），留空则使用默认每秒价（grok-imagine-video：480p $0.05/s、720p $0.07/s；video-1.5：480p $0.08/s、720p $0.14/s、1080p $0.25/s）',
         independentMultiplier: '视频倍率独立',
         videoMultiplier: '视频独立倍率',
         modeHint:
-          '默认关闭独立倍率时，视频费用 = 视频价格 × 当前分组有效倍率；开启独立倍率后，视频费用 = 视频价格 × 视频独立倍率。',
-        finalPricePreview: '最终单次视频价格预览',
+          '视频按秒计费：费用 = 每秒价格 × 时长（1-15 秒，未指定默认 8 秒）。默认叠加当前分组有效倍率；开启独立倍率后改用视频独立倍率。',
+        finalPricePreview: '最终每秒价格预览',
         notConfigured: '未配置'
       },
       peakRate: {
diff --git a/frontend/src/views/admin/GroupsView.vue b/frontend/src/views/admin/GroupsView.vue
index ef75e6ab97..1f22216100 100644
--- a/frontend/src/views/admin/GroupsView.vue
+++ b/frontend/src/views/admin/GroupsView.vue
@@ -1010,7 +1010,7 @@
           </div>
           <div class="grid grid-cols-3 gap-3">
             <div>
-              <label class="input-label">480p ($)</label>
+              <label class="input-label">480p ($/s)</label>
               <input
                 v-model.number="createForm.video_price_480p"
                 type="number"
@@ -1021,7 +1021,7 @@
               />
             </div>
             <div>
-              <label class="input-label">720p ($)</label>
+              <label class="input-label">720p ($/s)</label>
               <input
                 v-model.number="createForm.video_price_720p"
                 type="number"
@@ -1032,7 +1032,7 @@
               />
             </div>
             <div>
-              <label class="input-label">1080p ($)</label>
+              <label class="input-label">1080p ($/s)</label>
               <input
                 v-model.number="createForm.video_price_1080p"
                 type="number"
@@ -2489,7 +2489,7 @@
           </div>
           <div class="grid grid-cols-3 gap-3">
             <div>
-              <label class="input-label">480p ($)</label>
+              <label class="input-label">480p ($/s)</label>
               <input
                 v-model.number="editForm.video_price_480p"
                 type="number"
@@ -2500,7 +2500,7 @@
               />
             </div>
             <div>
-              <label class="input-label">720p ($)</label>
+              <label class="input-label">720p ($/s)</label>
               <input
                 v-model.number="editForm.video_price_720p"
                 type="number"
@@ -2511,7 +2511,7 @@
               />
             </div>
             <div>
-              <label class="input-label">1080p ($)</label>
+              <label class="input-label">1080p ($/s)</label>
               <input
                 v-model.number="editForm.video_price_1080p"
                 type="number"
@@ -4718,6 +4718,14 @@ const handleCreateGroup = async () => {
     requestData.video_rate_multiplier = normalizeRateMultiplier(
       requestData.video_rate_multiplier,
     );
+    // 媒体价格输入清空时 v-model.number 产生 ""，直接提交会被后端 *float64 反序列化拒绝（400），
+    // 创建时按"未配置"（null）处理。
+    requestData.image_price_1k = emptyToNull(requestData.image_price_1k);
+    requestData.image_price_2k = emptyToNull(requestData.image_price_2k);
+    requestData.image_price_4k = emptyToNull(requestData.image_price_4k);
+    requestData.video_price_480p = emptyToNull(requestData.video_price_480p);
+    requestData.video_price_720p = emptyToNull(requestData.video_price_720p);
+    requestData.video_price_1080p = emptyToNull(requestData.video_price_1080p);
     requestData.peak_rate_enabled = createForm.peak_rate_enabled;
     requestData.peak_start = createForm.peak_start;
     requestData.peak_end = createForm.peak_end;
@@ -4896,6 +4904,16 @@ const handleUpdateGroup = async () => {
     payload.video_rate_multiplier = normalizeRateMultiplier(
       payload.video_rate_multiplier,
     );
+    // 媒体价格输入清空时 v-model.number 产生 ""，直接提交会被后端 *float64 反序列化拒绝（400）。
+    // 更新语义中 null 表示"不修改"，因此清空后的字段发送 -1：后端 normalizePrice 将负价归一为
+    // NULL，从而真正清除已配置的价格。
+    const emptyPriceToClear = (v: any) => (v === "" || v === null ? -1 : v);
+    payload.image_price_1k = emptyPriceToClear(payload.image_price_1k);
+    payload.image_price_2k = emptyPriceToClear(payload.image_price_2k);
+    payload.image_price_4k = emptyPriceToClear(payload.image_price_4k);
+    payload.video_price_480p = emptyPriceToClear(payload.video_price_480p);
+    payload.video_price_720p = emptyPriceToClear(payload.video_price_720p);
+    payload.video_price_1080p = emptyPriceToClear(payload.video_price_1080p);
     payload.peak_rate_enabled = editForm.peak_rate_enabled;
     payload.peak_start = editForm.peak_start;
     payload.peak_end = editForm.peak_end;
diff --git a/frontend/src/views/admin/__tests__/groupsImagePricing.spec.ts b/frontend/src/views/admin/__tests__/groupsImagePricing.spec.ts
index e83e22319d..eadd5d711c 100644
--- a/frontend/src/views/admin/__tests__/groupsImagePricing.spec.ts
+++ b/frontend/src/views/admin/__tests__/groupsImagePricing.spec.ts
@@ -37,8 +37,10 @@ describe("groups image pricing platform support", () => {
   it("uses Grok media defaults instead of generic image fallback placeholders", () => {
     expect(getImagePricePlaceholder("grok", "image_price_1k")).toBe("0.02");
     expect(getImagePricePlaceholder("grok", "image_price_2k")).toBe("0.02");
-    expect(getVideoPricePlaceholder("grok", "video_price_480p")).toBe("0.08");
-    expect(getVideoPricePlaceholder("grok", "video_price_720p")).toBe("0.14");
+    // 视频 placeholder 为每秒单价：480p/720p 取 grok-imagine-video 官方每秒价，
+    // 1080p 仅 video-1.5 支持、取 1.5 每秒价。
+    expect(getVideoPricePlaceholder("grok", "video_price_480p")).toBe("0.05");
+    expect(getVideoPricePlaceholder("grok", "video_price_720p")).toBe("0.07");
     expect(getVideoPricePlaceholder("grok", "video_price_1080p")).toBe("0.25");
   });
 
diff --git a/frontend/src/views/admin/groupsImagePricing.ts b/frontend/src/views/admin/groupsImagePricing.ts
index d88c479995..7ac4fafd07 100644
--- a/frontend/src/views/admin/groupsImagePricing.ts
+++ b/frontend/src/views/admin/groupsImagePricing.ts
@@ -39,13 +39,15 @@ const defaultImagePricePlaceholders: Record<
   },
 };
 
+// 视频价为每秒单价（USD/s）。480p/720p 取 grok-imagine-video（文生视频实际走该模型）的
+// 官方每秒价；1080p 仅 grok-imagine-video-1.5 图生视频支持，取 1.5 的每秒价。
 const defaultVideoPricePlaceholders: Record<
   string,
   Record<VideoPricingTierKey, string>
 > = {
   grok: {
-    video_price_480p: "0.08",
-    video_price_720p: "0.14",
+    video_price_480p: "0.05",
+    video_price_720p: "0.07",
     video_price_1080p: "0.25",
   },
 };