diff --git a/backend/ent/schema/group.go b/backend/ent/schema/group.go
index 306d088682..2b8420db6d 100644
--- a/backend/ent/schema/group.go
+++ b/backend/ent/schema/group.go
@@ -45,7 +45,7 @@ func (Group) Fields() []ent.Field {
 		field.Float("rate_multiplier").
 			SchemaType(map[string]string{dialect.Postgres: "decimal(10,4)"}).
 			Default(1.0),
-		// 高峰时段倍率（added by migration 156）
+		// 高峰时段倍率（added by migration 158）
 		field.Bool("peak_rate_enabled").
 			Default(false).
 			Comment("是否启用高峰时段倍率"),
diff --git a/backend/internal/handler/available_channel_handler.go b/backend/internal/handler/available_channel_handler.go
index 8982b80def..8da4c07973 100644
--- a/backend/internal/handler/available_channel_handler.go
+++ b/backend/internal/handler/available_channel_handler.go
@@ -50,15 +50,19 @@ func (h *AvailableChannelHandler) featureEnabled(c *gin.Context) bool {
 // userAvailableGroup 用户可见的分组概要（白名单字段）。
 //
 // 前端据此区分专属 vs 公开分组（IsExclusive）、订阅 vs 标准分组（SubscriptionType，
-// 订阅视觉加深），并用 RateMultiplier 作为默认倍率；用户专属倍率前端走
+// 订阅视觉加深），并展示默认倍率与高峰倍率规则；用户专属倍率前端走
 // /groups/rates，和 API 密钥页面保持一致。
 type userAvailableGroup struct {
-	ID               int64   `json:"id"`
-	Name             string  `json:"name"`
-	Platform         string  `json:"platform"`
-	SubscriptionType string  `json:"subscription_type"`
-	RateMultiplier   float64 `json:"rate_multiplier"`
-	IsExclusive      bool    `json:"is_exclusive"`
+	ID                 int64   `json:"id"`
+	Name               string  `json:"name"`
+	Platform           string  `json:"platform"`
+	SubscriptionType   string  `json:"subscription_type"`
+	RateMultiplier     float64 `json:"rate_multiplier"`
+	PeakRateEnabled    bool    `json:"peak_rate_enabled"`
+	PeakStart          string  `json:"peak_start"`
+	PeakEnd            string  `json:"peak_end"`
+	PeakRateMultiplier float64 `json:"peak_rate_multiplier"`
+	IsExclusive        bool    `json:"is_exclusive"`
 }
 
 // userSupportedModelPricing 用户可见的定价字段白名单。
@@ -213,12 +217,16 @@ func filterUserVisibleGroups(
 			continue
 		}
 		visible = append(visible, userAvailableGroup{
-			ID:               g.ID,
-			Name:             g.Name,
-			Platform:         g.Platform,
-			SubscriptionType: g.SubscriptionType,
-			RateMultiplier:   g.RateMultiplier,
-			IsExclusive:      g.IsExclusive,
+			ID:                 g.ID,
+			Name:               g.Name,
+			Platform:           g.Platform,
+			SubscriptionType:   g.SubscriptionType,
+			RateMultiplier:     g.RateMultiplier,
+			PeakRateEnabled:    g.PeakRateEnabled,
+			PeakStart:          g.PeakStart,
+			PeakEnd:            g.PeakEnd,
+			PeakRateMultiplier: g.PeakRateMultiplier,
+			IsExclusive:        g.IsExclusive,
 		})
 	}
 	return visible
diff --git a/backend/internal/handler/available_channel_handler_test.go b/backend/internal/handler/available_channel_handler_test.go
index 0a7ce6c466..bb53297980 100644
--- a/backend/internal/handler/available_channel_handler_test.go
+++ b/backend/internal/handler/available_channel_handler_test.go
@@ -101,13 +101,13 @@ func TestUserAvailableChannel_FieldWhitelist(t *testing.T) {
 		require.Truef(t, exists, "platform section must expose %q", key)
 	}
 
-	// Group DTO 暴露区分专属/公开、订阅类型、默认倍率所需的字段，
+	// Group DTO 暴露区分专属/公开、订阅类型、默认倍率和高峰倍率规则所需的字段，
 	// 前端据此渲染 GroupBadge 并与 API 密钥页保持一致的视觉。
 	rawGroup, err := json.Marshal(row.Platforms[0].Groups[0])
 	require.NoError(t, err)
 	var groupDecoded map[string]any
 	require.NoError(t, json.Unmarshal(rawGroup, &groupDecoded))
-	for _, key := range []string{"id", "name", "platform", "subscription_type", "rate_multiplier", "is_exclusive"} {
+	for _, key := range []string{"id", "name", "platform", "subscription_type", "rate_multiplier", "peak_rate_enabled", "peak_start", "peak_end", "peak_rate_multiplier", "is_exclusive"} {
 		_, exists := groupDecoded[key]
 		require.Truef(t, exists, "group DTO must expose %q", key)
 	}
diff --git a/backend/internal/handler/payment_handler.go b/backend/internal/handler/payment_handler.go
index 4047cbfd27..7cdf73cd3d 100644
--- a/backend/internal/handler/payment_handler.go
+++ b/backend/internal/handler/payment_handler.go
@@ -54,25 +54,35 @@ func (h *PaymentHandler) GetPlans(c *gin.Context) {
 	}
 	// Enrich plans with group platform for frontend color coding
 	type planWithPlatform struct {
-		ID            int64    `json:"id"`
-		GroupID       int64    `json:"group_id"`
-		GroupPlatform string   `json:"group_platform"`
-		Name          string   `json:"name"`
-		Description   string   `json:"description"`
-		Price         float64  `json:"price"`
-		OriginalPrice *float64 `json:"original_price,omitempty"`
-		ValidityDays  int      `json:"validity_days"`
-		ValidityUnit  string   `json:"validity_unit"`
-		Features      string   `json:"features"`
-		ProductName   string   `json:"product_name"`
-		ForSale       bool     `json:"for_sale"`
-		SortOrder     int      `json:"sort_order"`
+		ID                 int64    `json:"id"`
+		GroupID            int64    `json:"group_id"`
+		GroupPlatform      string   `json:"group_platform"`
+		GroupName          string   `json:"group_name"`
+		RateMultiplier     float64  `json:"rate_multiplier"`
+		PeakRateEnabled    bool     `json:"peak_rate_enabled"`
+		PeakStart          string   `json:"peak_start"`
+		PeakEnd            string   `json:"peak_end"`
+		PeakRateMultiplier float64  `json:"peak_rate_multiplier"`
+		Name               string   `json:"name"`
+		Description        string   `json:"description"`
+		Price              float64  `json:"price"`
+		OriginalPrice      *float64 `json:"original_price,omitempty"`
+		ValidityDays       int      `json:"validity_days"`
+		ValidityUnit       string   `json:"validity_unit"`
+		Features           string   `json:"features"`
+		ProductName        string   `json:"product_name"`
+		ForSale            bool     `json:"for_sale"`
+		SortOrder          int      `json:"sort_order"`
 	}
-	platformMap := h.configService.GetGroupPlatformMap(c.Request.Context(), plans)
+	groupInfo := h.configService.GetGroupInfoMap(c.Request.Context(), plans)
 	result := make([]planWithPlatform, 0, len(plans))
 	for _, p := range plans {
+		gi := groupInfo[p.GroupID]
 		result = append(result, planWithPlatform{
-			ID: int64(p.ID), GroupID: p.GroupID, GroupPlatform: platformMap[p.GroupID],
+			ID: int64(p.ID), GroupID: p.GroupID,
+			GroupPlatform: gi.Platform, GroupName: gi.Name,
+			RateMultiplier: gi.RateMultiplier, PeakRateEnabled: gi.PeakRateEnabled,
+			PeakStart: gi.PeakStart, PeakEnd: gi.PeakEnd, PeakRateMultiplier: gi.PeakRateMultiplier,
 			Name: p.Name, Description: p.Description, Price: p.Price, OriginalPrice: p.OriginalPrice,
 			ValidityDays: p.ValidityDays, ValidityUnit: p.ValidityUnit, Features: p.Features,
 			ProductName: p.ProductName, ForSale: p.ForSale, SortOrder: p.SortOrder,
@@ -121,7 +131,10 @@ func (h *PaymentHandler) GetCheckoutInfo(c *gin.Context) {
 		planList = append(planList, checkoutPlan{
 			ID: int64(p.ID), GroupID: p.GroupID,
 			GroupPlatform: gi.Platform, GroupName: gi.Name,
-			RateMultiplier: gi.RateMultiplier, DailyLimitUSD: gi.DailyLimitUSD,
+			RateMultiplier:  gi.RateMultiplier,
+			PeakRateEnabled: gi.PeakRateEnabled, PeakStart: gi.PeakStart,
+			PeakEnd: gi.PeakEnd, PeakRateMultiplier: gi.PeakRateMultiplier,
+			DailyLimitUSD:  gi.DailyLimitUSD,
 			WeeklyLimitUSD: gi.WeeklyLimitUSD, MonthlyLimitUSD: gi.MonthlyLimitUSD,
 			ModelScopes: gi.ModelScopes,
 			Name:        p.Name, Description: p.Description, Price: p.Price, OriginalPrice: p.OriginalPrice,
@@ -160,23 +173,27 @@ type checkoutInfoResponse struct {
 }
 
 type checkoutPlan struct {
-	ID              int64    `json:"id"`
-	GroupID         int64    `json:"group_id"`
-	GroupPlatform   string   `json:"group_platform"`
-	GroupName       string   `json:"group_name"`
-	RateMultiplier  float64  `json:"rate_multiplier"`
-	DailyLimitUSD   *float64 `json:"daily_limit_usd"`
-	WeeklyLimitUSD  *float64 `json:"weekly_limit_usd"`
-	MonthlyLimitUSD *float64 `json:"monthly_limit_usd"`
-	ModelScopes     []string `json:"supported_model_scopes"`
-	Name            string   `json:"name"`
-	Description     string   `json:"description"`
-	Price           float64  `json:"price"`
-	OriginalPrice   *float64 `json:"original_price,omitempty"`
-	ValidityDays    int      `json:"validity_days"`
-	ValidityUnit    string   `json:"validity_unit"`
-	Features        []string `json:"features"`
-	ProductName     string   `json:"product_name"`
+	ID                 int64    `json:"id"`
+	GroupID            int64    `json:"group_id"`
+	GroupPlatform      string   `json:"group_platform"`
+	GroupName          string   `json:"group_name"`
+	RateMultiplier     float64  `json:"rate_multiplier"`
+	PeakRateEnabled    bool     `json:"peak_rate_enabled"`
+	PeakStart          string   `json:"peak_start"`
+	PeakEnd            string   `json:"peak_end"`
+	PeakRateMultiplier float64  `json:"peak_rate_multiplier"`
+	DailyLimitUSD      *float64 `json:"daily_limit_usd"`
+	WeeklyLimitUSD     *float64 `json:"weekly_limit_usd"`
+	MonthlyLimitUSD    *float64 `json:"monthly_limit_usd"`
+	ModelScopes        []string `json:"supported_model_scopes"`
+	Name               string   `json:"name"`
+	Description        string   `json:"description"`
+	Price              float64  `json:"price"`
+	OriginalPrice      *float64 `json:"original_price,omitempty"`
+	ValidityDays       int      `json:"validity_days"`
+	ValidityUnit       string   `json:"validity_unit"`
+	Features           []string `json:"features"`
+	ProductName        string   `json:"product_name"`
 }
 
 // parseFeatures splits a newline-separated features string into a string slice.
diff --git a/backend/internal/service/admin_service.go b/backend/internal/service/admin_service.go
index ed83beef89..2a3189f61f 100644
--- a/backend/internal/service/admin_service.go
+++ b/backend/internal/service/admin_service.go
@@ -2128,6 +2128,12 @@ func (s *adminServiceImpl) UpdateGroup(ctx context.Context, id int64, input *Upd
 	if input.PeakRateMultiplier != nil {
 		group.PeakRateMultiplier = *input.PeakRateMultiplier
 	}
+	if group.SubscriptionType != SubscriptionTypeSubscription {
+		group.PeakRateEnabled = false
+		group.PeakStart = ""
+		group.PeakEnd = ""
+		group.PeakRateMultiplier = 1.0
+	}
 	// 收敛校验：Update 可能只传部分 peak 字段，需对合并后的最终配置统一校验，
 	// 防止单独修改 start/end 导致最终 start>=end 等非法配置入库。
 	if err := ValidatePeakRateConfig(group.SubscriptionType, group.PeakRateEnabled, group.PeakStart, group.PeakEnd, group.PeakRateMultiplier); err != nil {
diff --git a/backend/internal/service/admin_service_group_test.go b/backend/internal/service/admin_service_group_test.go
index eb3eff7f69..2951e13c53 100644
--- a/backend/internal/service/admin_service_group_test.go
+++ b/backend/internal/service/admin_service_group_test.go
@@ -375,6 +375,34 @@ func TestAdminService_UpdateGroup_InvalidatesAuthCacheOnRPMLimitChange(t *testin
 	require.Equal(t, []int64{1}, invalidator.groupIDs, "分组 RPMLimit 写入 auth snapshot，变更后必须失效 API Key 认证缓存")
 }
 
+func TestAdminService_UpdateGroup_ClearsPeakRateWhenChangingToStandard(t *testing.T) {
+	existingGroup := &Group{
+		ID:                 1,
+		Name:               "existing-group",
+		Platform:           PlatformOpenAI,
+		Status:             StatusActive,
+		SubscriptionType:   SubscriptionTypeSubscription,
+		PeakRateEnabled:    true,
+		PeakStart:          "14:00",
+		PeakEnd:            "18:00",
+		PeakRateMultiplier: 3,
+	}
+	repo := &groupRepoStubForAdmin{getByID: existingGroup}
+	svc := &adminServiceImpl{groupRepo: repo}
+
+	group, err := svc.UpdateGroup(context.Background(), 1, &UpdateGroupInput{
+		SubscriptionType: SubscriptionTypeStandard,
+	})
+	require.NoError(t, err)
+	require.NotNil(t, group)
+	require.NotNil(t, repo.updated)
+	require.Equal(t, SubscriptionTypeStandard, repo.updated.SubscriptionType)
+	require.False(t, repo.updated.PeakRateEnabled)
+	require.Equal(t, "", repo.updated.PeakStart)
+	require.Equal(t, "", repo.updated.PeakEnd)
+	require.Equal(t, 1.0, repo.updated.PeakRateMultiplier)
+}
+
 func TestAdminService_CreateGroup_NormalizesMessagesDispatchModelConfig(t *testing.T) {
 	repo := &groupRepoStubForAdmin{}
 	svc := &adminServiceImpl{groupRepo: repo}
diff --git a/backend/internal/service/admin_service_peak_rate_test.go b/backend/internal/service/admin_service_peak_rate_test.go
new file mode 100644
index 0000000000..87f6f497b1
--- /dev/null
+++ b/backend/internal/service/admin_service_peak_rate_test.go
@@ -0,0 +1,106 @@
+package service
+
+import (
+	"context"
+	"testing"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/stretchr/testify/require"
+)
+
+type peakRateGroupRepoStub struct {
+	getByID *Group
+	updated *Group
+}
+
+func (s *peakRateGroupRepoStub) Create(context.Context, *Group) error {
+	panic("unexpected Create call")
+}
+
+func (s *peakRateGroupRepoStub) GetByID(context.Context, int64) (*Group, error) {
+	return s.getByID, nil
+}
+
+func (s *peakRateGroupRepoStub) GetByIDLite(context.Context, int64) (*Group, error) {
+	return s.getByID, nil
+}
+
+func (s *peakRateGroupRepoStub) Update(_ context.Context, group *Group) error {
+	s.updated = group
+	return nil
+}
+
+func (s *peakRateGroupRepoStub) Delete(context.Context, int64) error {
+	panic("unexpected Delete call")
+}
+
+func (s *peakRateGroupRepoStub) DeleteCascade(context.Context, int64) ([]int64, error) {
+	panic("unexpected DeleteCascade call")
+}
+
+func (s *peakRateGroupRepoStub) List(context.Context, pagination.PaginationParams) ([]Group, *pagination.PaginationResult, error) {
+	panic("unexpected List call")
+}
+
+func (s *peakRateGroupRepoStub) ListWithFilters(context.Context, pagination.PaginationParams, string, string, string, *bool) ([]Group, *pagination.PaginationResult, error) {
+	panic("unexpected ListWithFilters call")
+}
+
+func (s *peakRateGroupRepoStub) ListActive(context.Context) ([]Group, error) {
+	panic("unexpected ListActive call")
+}
+
+func (s *peakRateGroupRepoStub) ListActiveByPlatform(context.Context, string) ([]Group, error) {
+	panic("unexpected ListActiveByPlatform call")
+}
+
+func (s *peakRateGroupRepoStub) ExistsByName(context.Context, string) (bool, error) {
+	panic("unexpected ExistsByName call")
+}
+
+func (s *peakRateGroupRepoStub) GetAccountCount(context.Context, int64) (int64, int64, error) {
+	panic("unexpected GetAccountCount call")
+}
+
+func (s *peakRateGroupRepoStub) DeleteAccountGroupsByGroupID(context.Context, int64) (int64, error) {
+	panic("unexpected DeleteAccountGroupsByGroupID call")
+}
+
+func (s *peakRateGroupRepoStub) GetAccountIDsByGroupIDs(context.Context, []int64) ([]int64, error) {
+	panic("unexpected GetAccountIDsByGroupIDs call")
+}
+
+func (s *peakRateGroupRepoStub) BindAccountsToGroup(context.Context, int64, []int64) error {
+	panic("unexpected BindAccountsToGroup call")
+}
+
+func (s *peakRateGroupRepoStub) UpdateSortOrders(context.Context, []GroupSortOrderUpdate) error {
+	panic("unexpected UpdateSortOrders call")
+}
+
+func TestAdminService_UpdateGroup_ClearsPeakRateWhenChangingToStandardDefault(t *testing.T) {
+	repo := &peakRateGroupRepoStub{getByID: &Group{
+		ID:                 1,
+		Name:               "existing-group",
+		Platform:           PlatformOpenAI,
+		Status:             StatusActive,
+		SubscriptionType:   SubscriptionTypeSubscription,
+		PeakRateEnabled:    true,
+		PeakStart:          "14:00",
+		PeakEnd:            "18:00",
+		PeakRateMultiplier: 3,
+	}}
+	svc := &adminServiceImpl{groupRepo: repo}
+
+	group, err := svc.UpdateGroup(context.Background(), 1, &UpdateGroupInput{
+		SubscriptionType: SubscriptionTypeStandard,
+	})
+	require.NoError(t, err)
+	require.NotNil(t, group)
+	require.NotNil(t, repo.updated)
+	require.Equal(t, SubscriptionTypeStandard, repo.updated.SubscriptionType)
+	require.False(t, repo.updated.PeakRateEnabled)
+	require.Equal(t, "", repo.updated.PeakStart)
+	require.Equal(t, "", repo.updated.PeakEnd)
+	require.Equal(t, 1.0, repo.updated.PeakRateMultiplier)
+}
diff --git a/backend/internal/service/api_key_auth_cache.go b/backend/internal/service/api_key_auth_cache.go
index 8089e90b97..32c3910c9d 100644
--- a/backend/internal/service/api_key_auth_cache.go
+++ b/backend/internal/service/api_key_auth_cache.go
@@ -95,7 +95,7 @@ type APIKeyAuthGroupSnapshot struct {
 	RPMLimit int `json:"rpm_limit"`
 
 	// 高峰时段倍率：PeakRateEnabled 为 true 且请求时刻处于 [PeakStart, PeakEnd) 时，
-	// 文本计费倍率额外乘以 PeakRateMultiplier（详见 Group.PeakMultiplierAt）。
+	// token 计费倍率额外乘以 PeakRateMultiplier（详见 Group.PeakMultiplierAt）。
 	// 必须随快照缓存，否则扣费路径拿到的 apiKey.Group 缺字段、高峰倍率失效。
 	PeakRateEnabled    bool    `json:"peak_rate_enabled"`
 	PeakStart          string  `json:"peak_start"`
diff --git a/backend/internal/service/billing_service.go b/backend/internal/service/billing_service.go
index a781936598..891b46c878 100644
--- a/backend/internal/service/billing_service.go
+++ b/backend/internal/service/billing_service.go
@@ -1080,15 +1080,19 @@ func (s *BillingService) CalculateCostWithConfig(model string, tokens UsageToken
 // 拆分为：范围内 (200k, 0) + 范围外 (10k, 10k)
 // 范围内正常计费，范围外 × 2 计费
 func (s *BillingService) CalculateCostWithLongContext(model string, tokens UsageTokens, rateMultiplier float64, threshold int, extraMultiplier float64) (*CostBreakdown, error) {
+	return s.calculateCostWithLongContext(model, tokens, rateMultiplier, threshold, extraMultiplier)
+}
+
+func (s *BillingService) calculateCostWithLongContext(model string, tokens UsageTokens, rateMultiplier float64, threshold int, extraMultiplier float64) (*CostBreakdown, error) {
 	// 未启用长上下文计费，直接走正常计费
 	if threshold <= 0 || extraMultiplier <= 1 {
-		return s.CalculateCost(model, tokens, rateMultiplier)
+		return s.calculateCostInternal(model, tokens, rateMultiplier, "", nil)
 	}
 
 	// 计算总输入 token（缓存读取 + 新输入）
 	total := tokens.CacheReadTokens + tokens.InputTokens
 	if total <= threshold {
-		return s.CalculateCost(model, tokens, rateMultiplier)
+		return s.calculateCostInternal(model, tokens, rateMultiplier, "", nil)
 	}
 
 	// 拆分成范围内和范围外
@@ -1119,7 +1123,7 @@ func (s *BillingService) CalculateCostWithLongContext(model string, tokens Usage
 		CacheCreation1hTokens: tokens.CacheCreation1hTokens,
 		ImageOutputTokens:     tokens.ImageOutputTokens,
 	}
-	inRangeCost, err := s.CalculateCost(model, inRangeTokens, rateMultiplier)
+	inRangeCost, err := s.calculateCostInternal(model, inRangeTokens, rateMultiplier, "", nil)
 	if err != nil {
 		return nil, err
 	}
@@ -1129,7 +1133,7 @@ func (s *BillingService) CalculateCostWithLongContext(model string, tokens Usage
 		InputTokens:     outRangeInputTokens,
 		CacheReadTokens: outRangeCacheTokens,
 	}
-	outRangeCost, err := s.CalculateCost(model, outRangeTokens, rateMultiplier*extraMultiplier)
+	outRangeCost, err := s.calculateCostInternal(model, outRangeTokens, rateMultiplier*extraMultiplier, "", nil)
 	if err != nil {
 		return inRangeCost, fmt.Errorf("out-range cost: %w", err)
 	}
diff --git a/backend/internal/service/billing_service_test.go b/backend/internal/service/billing_service_test.go
index 92c143c6ff..88debae99a 100644
--- a/backend/internal/service/billing_service_test.go
+++ b/backend/internal/service/billing_service_test.go
@@ -1377,7 +1377,7 @@ func TestComputeTokenBreakdown_ExplicitZeroImagePrice_NoFallback(t *testing.T) {
 		OutputTokens:      200,
 		ImageOutputTokens: 50,
 	}
-	bd := svc.computeTokenBreakdown(pricing, tokens, 1.0, "", false)
+	bd := svc.computeTokenBreakdown(pricing, tokens, 1.0, 0, false, "", false)
 
 	// ImageOutputTokens should NOT fall back to outputPrice
 	require.Equal(t, 0.0, bd.ImageOutputCost)
@@ -1399,7 +1399,7 @@ func TestComputeTokenBreakdown_NonExplicitZeroImagePrice_FallsBackToOutput(t *te
 		OutputTokens:      200,
 		ImageOutputTokens: 50,
 	}
-	bd := svc.computeTokenBreakdown(pricing, tokens, 1.0, "", false)
+	bd := svc.computeTokenBreakdown(pricing, tokens, 1.0, 0, false, "", false)
 
 	// Should fall back to outputPrice since not explicit
 	require.InDelta(t, 50*15e-6, bd.ImageOutputCost, 1e-12)
diff --git a/backend/internal/service/billing_service_unified_test.go b/backend/internal/service/billing_service_unified_test.go
index e6a92d1a8c..db7437d6ba 100644
--- a/backend/internal/service/billing_service_unified_test.go
+++ b/backend/internal/service/billing_service_unified_test.go
@@ -29,7 +29,7 @@ func TestCalculateCostUnified_NilResolver_FallsBackToOldPath(t *testing.T) {
 	require.NoError(t, err)
 
 	// Should match the old-path result exactly
-	expected, err := svc.calculateCostInternal("claude-sonnet-4", tokens, 1.0, "", nil)
+	expected, err := svc.calculateCostInternal("claude-sonnet-4", tokens, 1.0, 0, false, "", nil)
 	require.NoError(t, err)
 	require.InDelta(t, expected.TotalCost, cost.TotalCost, 1e-10)
 	require.InDelta(t, expected.ActualCost, cost.ActualCost, 1e-10)
@@ -60,6 +60,28 @@ func TestCalculateCostUnified_TokenMode(t *testing.T) {
 	require.Equal(t, string(BillingModeToken), cost.BillingMode)
 }
 
+func TestCalculateCostUnified_TokenModeAppliesRateMultiplierToImageTokens(t *testing.T) {
+	bs := newTestBillingService()
+	resolver := NewModelPricingResolver(nil, bs)
+
+	tokens := UsageTokens{InputTokens: 1000, OutputTokens: 600, ImageOutputTokens: 100}
+	cost, err := bs.CalculateCostUnified(CostInput{
+		Ctx:            context.Background(),
+		Model:          "claude-sonnet-4",
+		Tokens:         tokens,
+		RateMultiplier: 3.0,
+		Resolver:       resolver,
+	})
+	require.NoError(t, err)
+
+	textInput := 1000 * 3e-6
+	textOutput := 500 * 15e-6
+	imageOutput := 100 * 15e-6
+	require.InDelta(t, textInput+textOutput+imageOutput, cost.TotalCost, 1e-10)
+	require.InDelta(t, (textInput+textOutput+imageOutput)*3.0, cost.ActualCost, 1e-10)
+	require.InDelta(t, imageOutput, cost.ImageOutputCost, 1e-10)
+}
+
 func TestCalculateCostUnified_PerRequestMode(t *testing.T) {
 	// Set up a ChannelService with a per-request pricing channel
 	cs := newTestChannelServiceWithCache(t, &channelCache{
diff --git a/backend/internal/service/channel_available.go b/backend/internal/service/channel_available.go
index d2d24659a1..eeaf7dac2e 100644
--- a/backend/internal/service/channel_available.go
+++ b/backend/internal/service/channel_available.go
@@ -10,15 +10,19 @@ import (
 // AvailableGroupRef 渠道视图中关联分组的简要信息。
 //
 // 用户侧「可用渠道」页面据此展示：专属分组 vs 公开分组（IsExclusive）、
-// 订阅 vs 标准（SubscriptionType）、默认倍率（RateMultiplier）。用户专属倍率
-// 不在这里暴露，前端自己通过 /groups/rates 拉取，和 API 密钥页面保持一致。
+// 订阅 vs 标准（SubscriptionType）、默认倍率（RateMultiplier）与高峰倍率规则。
+// 用户专属倍率不在这里暴露，前端自己通过 /groups/rates 拉取，和 API 密钥页面保持一致。
 type AvailableGroupRef struct {
-	ID               int64
-	Name             string
-	Platform         string
-	SubscriptionType string
-	RateMultiplier   float64
-	IsExclusive      bool
+	ID                 int64
+	Name               string
+	Platform           string
+	SubscriptionType   string
+	RateMultiplier     float64
+	PeakRateEnabled    bool
+	PeakStart          string
+	PeakEnd            string
+	PeakRateMultiplier float64
+	IsExclusive        bool
 }
 
 // AvailableChannel 可用渠道视图：用于「可用渠道」页面展示渠道基础信息 +
@@ -59,12 +63,16 @@ func (s *ChannelService) ListAvailable(ctx context.Context) ([]AvailableChannel,
 	for i := range groups {
 		g := groups[i]
 		groupByID[g.ID] = AvailableGroupRef{
-			ID:               g.ID,
-			Name:             g.Name,
-			Platform:         g.Platform,
-			SubscriptionType: g.SubscriptionType,
-			RateMultiplier:   g.RateMultiplier,
-			IsExclusive:      g.IsExclusive,
+			ID:                 g.ID,
+			Name:               g.Name,
+			Platform:           g.Platform,
+			SubscriptionType:   g.SubscriptionType,
+			RateMultiplier:     g.RateMultiplier,
+			PeakRateEnabled:    g.PeakRateEnabled,
+			PeakStart:          g.PeakStart,
+			PeakEnd:            g.PeakEnd,
+			PeakRateMultiplier: g.PeakRateMultiplier,
+			IsExclusive:        g.IsExclusive,
 		}
 	}
 
diff --git a/backend/internal/service/gateway_record_usage_test.go b/backend/internal/service/gateway_record_usage_test.go
index f8d98e55cd..c819eeca6e 100644
--- a/backend/internal/service/gateway_record_usage_test.go
+++ b/backend/internal/service/gateway_record_usage_test.go
@@ -233,6 +233,59 @@ func TestGatewayServiceRecordUsage_EmptyImageSizeDefaultsBeforeBillingAndPersist
 	require.InDelta(t, 0.19, usageRepo.lastLog.ActualCost, 1e-12)
 }
 
+func TestGatewayServiceRecordUsage_PeakRateAffectsTokenModeImageOutputTokens(t *testing.T) {
+	groupID := int64(902)
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	userRepo := &openAIRecordUsageUserRepoStub{}
+	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, &openAIRecordUsageSubRepoStub{})
+	svc.resolver = newOpenAITokenImageChannelPricingResolverForTest(t, groupID, "gemini-image")
+
+	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
+		Result: &ForwardResult{
+			RequestID:  "gateway_peak_image_tokens",
+			Model:      "gemini-image",
+			ImageCount: 1,
+			Usage: ClaudeUsage{
+				InputTokens:       1000,
+				OutputTokens:      600,
+				ImageOutputTokens: 100,
+			},
+			Duration: time.Second,
+		},
+		APIKey: &APIKey{
+			ID:      802,
+			GroupID: i64p(groupID),
+			Group: &Group{
+				ID:                 groupID,
+				RateMultiplier:     1.0,
+				SubscriptionType:   SubscriptionTypeSubscription,
+				PeakRateEnabled:    true,
+				PeakStart:          "00:00",
+				PeakEnd:            "23:59",
+				PeakRateMultiplier: 3.0,
+			},
+		},
+		User:    &User{ID: 602},
+		Account: &Account{ID: 702},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	require.NotNil(t, usageRepo.lastLog.BillingMode)
+	require.Equal(t, string(BillingModeToken), *usageRepo.lastLog.BillingMode)
+	require.Equal(t, 3.0, usageRepo.lastLog.RateMultiplier)
+
+	textInput := 1000 * 3e-6
+	textOutput := 500 * 15e-6
+	imageOutput := 100 * 15e-6
+	expectedActual := (textInput + textOutput + imageOutput) * 3.0
+
+	require.InDelta(t, textInput+textOutput+imageOutput, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, imageOutput, usageRepo.lastLog.ImageOutputCost, 1e-12)
+	require.InDelta(t, expectedActual, usageRepo.lastLog.ActualCost, 1e-12)
+	require.InDelta(t, expectedActual, userRepo.lastAmount, 1e-12)
+}
+
 func TestGatewayServiceRecordUsage_UsageLogWriteErrorDoesNotSkipBilling(t *testing.T) {
 	usageRepo := &openAIRecordUsageLogRepoStub{inserted: false, err: MarkUsageLogCreateNotPersisted(context.Canceled)}
 	userRepo := &openAIRecordUsageUserRepoStub{}
diff --git a/backend/internal/service/gateway_service.go b/backend/internal/service/gateway_service.go
index 9a6b06a28e..e4ccced84b 100644
--- a/backend/internal/service/gateway_service.go
+++ b/backend/internal/service/gateway_service.go
@@ -9474,7 +9474,7 @@ func (s *GatewayService) recordUsageCore(ctx context.Context, input *recordUsage
 		groupDefault := apiKey.Group.RateMultiplier
 		multiplier = s.getUserGroupRateMultiplier(ctx, user.ID, *apiKey.GroupID, groupDefault)
 	}
-	// 文本倍率叠加高峰因子（仅文本，图片倍率不受影响）。高峰因子按请求时刻现算，
+	// token 倍率叠加高峰因子（token 计费含图片 token，图片按次倍率不受影响）。高峰因子按请求时刻现算，
 	// 不并入上面的 getUserGroupRateMultiplier，以免污染 user:group 倍率缓存。
 	multiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, multiplier, timezone.Now())
 
@@ -9679,12 +9679,9 @@ func (s *GatewayService) calculateTokenCost(
 		})
 	} else if opts.LongContextThreshold > 0 {
 		// 长上下文双倍计费（如 Gemini 200K 阈值）
-		cost, err = s.billingService.CalculateCostWithLongContext(
-			billingModel, tokens, multiplier,
-			opts.LongContextThreshold, opts.LongContextMultiplier,
-		)
+		cost, err = s.billingService.CalculateCostWithLongContext(billingModel, tokens, multiplier, opts.LongContextThreshold, opts.LongContextMultiplier)
 	} else {
-		cost, err = s.billingService.CalculateCost(billingModel, tokens, multiplier)
+		cost, err = s.billingService.CalculateCostWithServiceTier(billingModel, tokens, multiplier, "")
 	}
 	if err != nil {
 		logger.LegacyPrintf("service.gateway", "Calculate cost failed: %v", err)
diff --git a/backend/internal/service/group.go b/backend/internal/service/group.go
index 70df6714ff..f759e83073 100644
--- a/backend/internal/service/group.go
+++ b/backend/internal/service/group.go
@@ -20,7 +20,7 @@ type Group struct {
 	Platform       string
 	RateMultiplier float64
 	// 高峰时段倍率：peak_rate_enabled 为 true 且当前时刻处于 [PeakStart, PeakEnd) 时，
-	// 文本计费倍率额外乘以 PeakRateMultiplier。详见 PeakMultiplierAt。
+	// token 计费倍率额外乘以 PeakRateMultiplier。详见 PeakMultiplierAt。
 	PeakRateEnabled    bool
 	PeakStart          string
 	PeakEnd            string
@@ -211,6 +211,7 @@ func (g *Group) PeakMultiplierAt(now time.Time) float64 {
 
 // ValidatePeakRateConfig 是高峰倍率配置的唯一校验来源，供 handler 与 service 层共用。
 // enabled=true 时仅允许订阅类型分组；并要求 start/end 合法且 end>start（不支持跨天），multiplier>=0。
+// multiplier=0 是允许的，表示高峰 token 请求按 0 倍计费，可用于折扣/免费策略。
 // enabled=false 时放行（不关心类型）。subscriptionType 为空按 standard 处理。
 func ValidatePeakRateConfig(subscriptionType string, enabled bool, start, end string, multiplier float64) error {
 	if !enabled {
@@ -239,10 +240,10 @@ func ValidatePeakRateConfig(subscriptionType string, enabled bool, start, end st
 	return nil
 }
 
-// computePeakAwareMultipliers 把"基础文本倍率 base"（已含系统/分组/用户级倍率，但不含高峰）
-// 拆分为最终文本倍率与图片倍率：图片倍率基于 base 现算、不受高峰影响；文本倍率在 base 上叠加高峰因子。
+// computePeakAwareMultipliers 把"基础 token 倍率 base"（已含系统/分组/用户级倍率，但不含高峰）
+// 拆分为最终 token 倍率与图片按次倍率：图片按次倍率基于 base 现算、不受高峰影响；token 倍率在 base 上叠加高峰因子。
 // gateway_service.recordUsageCore 与 openai_gateway_service.RecordUsage 共用此函数，
-// 锁死"高峰因子只乘入文本倍率、图片倍率不受影响"这一叠加顺序——任何调换都会被 group_peak_rate_test 覆盖。
+// 锁死"高峰因子只乘入 token 倍率、图片按次倍率不受影响"这一叠加顺序——任何调换都会被 group_peak_rate_test 覆盖。
 func computePeakAwareMultipliers(apiKey *APIKey, base float64, now time.Time) (text, image float64) {
 	image = resolveImageRateMultiplier(apiKey, base)
 	peak := 1.0
diff --git a/backend/internal/service/group_peak_rate_test.go b/backend/internal/service/group_peak_rate_test.go
index f63d298da6..222b2b70e0 100644
--- a/backend/internal/service/group_peak_rate_test.go
+++ b/backend/internal/service/group_peak_rate_test.go
@@ -148,32 +148,32 @@ func TestPeakMultiplierAt_StandardTypeDegradesToOne(t *testing.T) {
 
 // TestPeakMultiplier_GatewayBillingSequence 调用 gateway_service.recordUsageCore 与
 // openai_gateway_service.RecordUsage 共用的 computePeakAwareMultipliers，验证计费叠加顺序：
-// 图片倍率基于基础倍率算出且不受高峰影响，高峰因子只乘入文本倍率。
+// 图片按次倍率基于基础倍率算出且不受高峰影响，高峰因子只乘入 token 倍率。
 // 若有人调换叠加顺序或把高峰并入 imageMultiplier，此测试会失败。
 func TestPeakMultiplier_GatewayBillingSequence(t *testing.T) {
 	const baseMultiplier = 0.8
 	apiKey := &APIKey{Group: newPeakGroup(true, "14:00", "18:00", 3.0)}
 	approxEq := func(a, b float64) bool { return math.Abs(a-b) < 1e-9 }
 
-	t.Run("peak hour amplifies text only", func(t *testing.T) {
+	t.Run("peak hour amplifies token multiplier only", func(t *testing.T) {
 		now := at(15, 30) // 处于 [14:00, 18:00)
-		textMultiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, baseMultiplier, now)
+		tokenMultiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, baseMultiplier, now)
 		if !approxEq(imageMultiplier, baseMultiplier) {
 			t.Fatalf("image multiplier must not be affected by peak: got %v, want %v", imageMultiplier, baseMultiplier)
 		}
-		if want := baseMultiplier * 3.0; !approxEq(textMultiplier, want) {
-			t.Fatalf("text multiplier should include peak factor: got %v, want %v", textMultiplier, want)
+		if want := baseMultiplier * 3.0; !approxEq(tokenMultiplier, want) {
+			t.Fatalf("token multiplier should include peak factor: got %v, want %v", tokenMultiplier, want)
 		}
 	})
 
 	t.Run("off-peak leaves both multipliers at base", func(t *testing.T) {
 		now := at(20, 0)
-		textMultiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, baseMultiplier, now)
+		tokenMultiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, baseMultiplier, now)
 		if !approxEq(imageMultiplier, baseMultiplier) {
 			t.Fatalf("image multiplier: got %v, want %v", imageMultiplier, baseMultiplier)
 		}
-		if !approxEq(textMultiplier, baseMultiplier) {
-			t.Fatalf("text multiplier should equal base off-peak: got %v, want %v", textMultiplier, baseMultiplier)
+		if !approxEq(tokenMultiplier, baseMultiplier) {
+			t.Fatalf("token multiplier should equal base off-peak: got %v, want %v", tokenMultiplier, baseMultiplier)
 		}
 	})
 
@@ -183,20 +183,20 @@ func TestPeakMultiplier_GatewayBillingSequence(t *testing.T) {
 		indGroup.ImageRateMultiplier = 0.5
 		indKey := &APIKey{Group: indGroup}
 		now := at(15, 30)
-		textMultiplier, imageMultiplier := computePeakAwareMultipliers(indKey, baseMultiplier, now)
+		tokenMultiplier, imageMultiplier := computePeakAwareMultipliers(indKey, baseMultiplier, now)
 		if !approxEq(imageMultiplier, 0.5) {
 			t.Fatalf("independent image multiplier: got %v, want 0.5", imageMultiplier)
 		}
-		if want := baseMultiplier * 3.0; !approxEq(textMultiplier, want) {
-			t.Fatalf("text multiplier should include peak factor: got %v, want %v", textMultiplier, want)
+		if want := baseMultiplier * 3.0; !approxEq(tokenMultiplier, want) {
+			t.Fatalf("token multiplier should include peak factor: got %v, want %v", tokenMultiplier, want)
 		}
 	})
 
 	t.Run("nil api key degrades to base multipliers", func(t *testing.T) {
 		now := at(15, 30)
-		textMultiplier, imageMultiplier := computePeakAwareMultipliers(nil, baseMultiplier, now)
-		if !approxEq(textMultiplier, baseMultiplier) {
-			t.Fatalf("nil group text multiplier: got %v, want %v", textMultiplier, baseMultiplier)
+		tokenMultiplier, imageMultiplier := computePeakAwareMultipliers(nil, baseMultiplier, now)
+		if !approxEq(tokenMultiplier, baseMultiplier) {
+			t.Fatalf("nil group token multiplier: got %v, want %v", tokenMultiplier, baseMultiplier)
 		}
 		if !approxEq(imageMultiplier, baseMultiplier) {
 			t.Fatalf("nil group image multiplier: got %v, want %v", imageMultiplier, baseMultiplier)
diff --git a/backend/internal/service/openai_gateway_record_usage_test.go b/backend/internal/service/openai_gateway_record_usage_test.go
index 83ca42b733..a7004f5d54 100644
--- a/backend/internal/service/openai_gateway_record_usage_test.go
+++ b/backend/internal/service/openai_gateway_record_usage_test.go
@@ -408,6 +408,72 @@ func TestOpenAIGatewayServiceRecordUsage_UsesUserSpecificGroupRate(t *testing.T)
 	require.Equal(t, 1, userRepo.deductCalls)
 }
 
+func TestOpenAIGatewayServiceRecordUsage_PeakRateAffectsTokenModeImageOutputTokens(t *testing.T) {
+	groupID := int64(14)
+	groupRate := 1.0
+	usage := OpenAIUsage{
+		InputTokens:       1000,
+		OutputTokens:      600,
+		ImageOutputTokens: 100,
+	}
+
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	userRepo := &openAIRecordUsageUserRepoStub{}
+	subRepo := &openAIRecordUsageSubRepoStub{}
+	svc := newOpenAIRecordUsageServiceForTest(usageRepo, userRepo, subRepo, nil)
+	svc.resolver = newOpenAITokenImageChannelPricingResolverForTest(t, groupID, "gpt-5.1")
+
+	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
+		Result: &OpenAIForwardResult{
+			RequestID:  "resp_peak_image_tokens",
+			Usage:      usage,
+			Model:      "gpt-5.1",
+			Duration:   time.Second,
+			ImageCount: 1,
+		},
+		APIKey: &APIKey{
+			ID:      1004,
+			GroupID: i64p(groupID),
+			Group: &Group{
+				ID:                 groupID,
+				RateMultiplier:     groupRate,
+				SubscriptionType:   "subscription",
+				PeakRateEnabled:    true,
+				PeakStart:          "00:00",
+				PeakEnd:            "23:59",
+				PeakRateMultiplier: 3.0,
+			},
+		},
+		User:    &User{ID: 2004},
+		Account: &Account{ID: 3004},
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	require.Equal(t, 3.0, usageRepo.lastLog.RateMultiplier)
+	require.Equal(t, usage.ImageOutputTokens, usageRepo.lastLog.ImageOutputTokens)
+
+	expected, err := svc.billingService.CalculateCostUnified(CostInput{
+		Ctx:     context.Background(),
+		Model:   "gpt-5.1",
+		GroupID: i64p(groupID),
+		Tokens: UsageTokens{
+			InputTokens:       usage.InputTokens,
+			OutputTokens:      usage.OutputTokens,
+			ImageOutputTokens: usage.ImageOutputTokens,
+		},
+		RateMultiplier: 1.0,
+		Resolver:       svc.resolver,
+	})
+	require.NoError(t, err)
+	expectedActual := expected.TotalCost * 3.0
+
+	require.InDelta(t, expected.TotalCost, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, expected.ImageOutputCost, usageRepo.lastLog.ImageOutputCost, 1e-12)
+	require.InDelta(t, expectedActual, usageRepo.lastLog.ActualCost, 1e-12)
+	require.InDelta(t, expectedActual, userRepo.lastAmount, 1e-12)
+}
+
 func TestOpenAIGatewayServiceRecordUsage_IncludesEndpointMetadata(t *testing.T) {
 	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
 	userRepo := &openAIRecordUsageUserRepoStub{}
@@ -1768,6 +1834,26 @@ func newOpenAIImageChannelPricingResolverForTest(t *testing.T, groupID int64, mo
 	return NewModelPricingResolver(cs, NewBillingService(&config.Config{}, nil))
 }
 
+func newOpenAITokenImageChannelPricingResolverForTest(t *testing.T, groupID int64, model string) *ModelPricingResolver {
+	t.Helper()
+	inputPrice := 3e-6
+	outputPrice := 15e-6
+	imageOutputPrice := 15e-6
+	cache := newEmptyChannelCache()
+	cache.pricingByGroupModel[channelModelKey{groupID: groupID, model: model}] = &ChannelModelPricing{
+		BillingMode:      BillingModeToken,
+		InputPrice:       &inputPrice,
+		OutputPrice:      &outputPrice,
+		ImageOutputPrice: &imageOutputPrice,
+	}
+	cache.channelByGroupID[groupID] = &Channel{ID: groupID, Status: StatusActive}
+	cache.groupPlatform[groupID] = ""
+	cache.loadedAt = time.Now()
+	cs := &ChannelService{}
+	cs.cache.Store(cache)
+	return NewModelPricingResolver(cs, NewBillingService(&config.Config{}, nil))
+}
+
 func TestGatewayServiceCalculateRecordUsageCost_ChannelImageBillingUsesImageCount(t *testing.T) {
 	groupID := int64(126)
 	billingService := NewBillingService(&config.Config{}, nil)
diff --git a/backend/internal/service/openai_gateway_service.go b/backend/internal/service/openai_gateway_service.go
index 6626292376..da3c3a3636 100644
--- a/backend/internal/service/openai_gateway_service.go
+++ b/backend/internal/service/openai_gateway_service.go
@@ -6350,7 +6350,7 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 		}
 		multiplier = resolver.Resolve(ctx, user.ID, *apiKey.GroupID, apiKey.Group.RateMultiplier)
 	}
-	// 文本倍率叠加高峰因子（仅文本，图片倍率不受影响）。高峰因子按请求时刻现算，
+	// token 倍率叠加高峰因子（token 计费含图片 token，图片按次倍率不受影响）。高峰因子按请求时刻现算，
 	// 不并入上面的 Resolve，以免污染 user:group 倍率缓存。
 	multiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, multiplier, timezone.Now())
 
diff --git a/backend/internal/service/payment_config_plans.go b/backend/internal/service/payment_config_plans.go
index bb161a1452..8801a55900 100644
--- a/backend/internal/service/payment_config_plans.go
+++ b/backend/internal/service/payment_config_plans.go
@@ -61,13 +61,17 @@ func validatePlanPatch(req UpdatePlanRequest) error {
 
 // PlanGroupInfo holds the group details needed for subscription plan display.
 type PlanGroupInfo struct {
-	Platform        string   `json:"platform"`
-	Name            string   `json:"name"`
-	RateMultiplier  float64  `json:"rate_multiplier"`
-	DailyLimitUSD   *float64 `json:"daily_limit_usd"`
-	WeeklyLimitUSD  *float64 `json:"weekly_limit_usd"`
-	MonthlyLimitUSD *float64 `json:"monthly_limit_usd"`
-	ModelScopes     []string `json:"supported_model_scopes"`
+	Platform           string   `json:"platform"`
+	Name               string   `json:"name"`
+	RateMultiplier     float64  `json:"rate_multiplier"`
+	PeakRateEnabled    bool     `json:"peak_rate_enabled"`
+	PeakStart          string   `json:"peak_start"`
+	PeakEnd            string   `json:"peak_end"`
+	PeakRateMultiplier float64  `json:"peak_rate_multiplier"`
+	DailyLimitUSD      *float64 `json:"daily_limit_usd"`
+	WeeklyLimitUSD     *float64 `json:"weekly_limit_usd"`
+	MonthlyLimitUSD    *float64 `json:"monthly_limit_usd"`
+	ModelScopes        []string `json:"supported_model_scopes"`
 }
 
 // GetGroupPlatformMap returns a map of group_id → platform for the given plans.
@@ -100,13 +104,17 @@ func (s *PaymentConfigService) GetGroupInfoMap(ctx context.Context, plans []*dbe
 	m := make(map[int64]PlanGroupInfo, len(groups))
 	for _, g := range groups {
 		m[int64(g.ID)] = PlanGroupInfo{
-			Platform:        g.Platform,
-			Name:            g.Name,
-			RateMultiplier:  g.RateMultiplier,
-			DailyLimitUSD:   g.DailyLimitUsd,
-			WeeklyLimitUSD:  g.WeeklyLimitUsd,
-			MonthlyLimitUSD: g.MonthlyLimitUsd,
-			ModelScopes:     g.SupportedModelScopes,
+			Platform:           g.Platform,
+			Name:               g.Name,
+			RateMultiplier:     g.RateMultiplier,
+			PeakRateEnabled:    g.PeakRateEnabled,
+			PeakStart:          g.PeakStart,
+			PeakEnd:            g.PeakEnd,
+			PeakRateMultiplier: g.PeakRateMultiplier,
+			DailyLimitUSD:      g.DailyLimitUsd,
+			WeeklyLimitUSD:     g.WeeklyLimitUsd,
+			MonthlyLimitUSD:    g.MonthlyLimitUsd,
+			ModelScopes:        g.SupportedModelScopes,
 		}
 	}
 	return m
diff --git a/frontend/src/api/channels.ts b/frontend/src/api/channels.ts
index 8962af2c4d..8eaf7eed95 100644
--- a/frontend/src/api/channels.ts
+++ b/frontend/src/api/channels.ts
@@ -14,6 +14,10 @@ export interface UserAvailableGroup {
   subscription_type: string
   /** 分组默认倍率。用户专属倍率（若有）通过 /groups/rates 获取后在前端 join。 */
   rate_multiplier: number
+  peak_rate_enabled: boolean
+  peak_start: string
+  peak_end: string
+  peak_rate_multiplier: number
   /** true = 专属分组（小范围授权）；false = 公开分组。 */
   is_exclusive: boolean
 }
diff --git a/frontend/src/components/admin/user/UserApiKeysModal.vue b/frontend/src/components/admin/user/UserApiKeysModal.vue
index 5e0a0fea69..ef24fe7eb0 100644
--- a/frontend/src/components/admin/user/UserApiKeysModal.vue
+++ b/frontend/src/components/admin/user/UserApiKeysModal.vue
@@ -32,6 +32,10 @@
                   :platform="key.group.platform"
                   :subscription-type="key.group.subscription_type"
                   :rate-multiplier="key.group.rate_multiplier"
+                  :peak-rate-enabled="key.group.peak_rate_enabled"
+                  :peak-start="key.group.peak_start"
+                  :peak-end="key.group.peak_end"
+                  :peak-rate-multiplier="key.group.peak_rate_multiplier"
                 />
                 <span v-else class="text-gray-400 italic">{{ t('admin.users.none') }}</span>
                 <svg v-if="updatingKeyIds.has(key.id)" class="h-3 w-3 animate-spin text-primary-500" fill="none" viewBox="0 0 24 24"><circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle><path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path></svg>
@@ -88,6 +92,10 @@
             :platform="group.platform"
             :subscription-type="group.subscription_type"
             :rate-multiplier="group.rate_multiplier"
+            :peak-rate-enabled="group.peak_rate_enabled"
+            :peak-start="group.peak_start"
+            :peak-end="group.peak_end"
+            :peak-rate-multiplier="group.peak_rate_multiplier"
             :description="group.description"
             :selected="selectedKeyForGroup?.group_id === group.id"
           />
diff --git a/frontend/src/components/channels/AvailableChannelsTable.vue b/frontend/src/components/channels/AvailableChannelsTable.vue
index 5b9c0eba20..02d1f2d1af 100644
--- a/frontend/src/components/channels/AvailableChannelsTable.vue
+++ b/frontend/src/components/channels/AvailableChannelsTable.vue
@@ -85,16 +85,28 @@
                   <Icon name="shield" size="xs" class="h-3 w-3" />
                   {{ t('availableChannels.exclusive') }}
                 </span>
-                <GroupBadge
+                <div
                   v-for="g in exclusiveGroups(section)"
                   :key="`ex-${g.id}`"
-                  :name="g.name"
-                  :platform="g.platform as GroupPlatform"
-                  :subscription-type="(g.subscription_type || 'standard') as SubscriptionType"
-                  :rate-multiplier="g.rate_multiplier"
-                  :user-rate-multiplier="userGroupRates[g.id] ?? null"
-                  always-show-rate
-                />
+                  class="inline-flex flex-wrap items-center gap-1"
+                >
+                  <GroupBadge
+                    :name="g.name"
+                    :platform="g.platform as GroupPlatform"
+                    :subscription-type="(g.subscription_type || 'standard') as SubscriptionType"
+                    :rate-multiplier="g.rate_multiplier"
+                    :user-rate-multiplier="userGroupRates[g.id] ?? null"
+                    always-show-rate
+                  />
+                  <span
+                    v-if="hasPeakRate(g)"
+                    class="inline-flex items-center gap-1 rounded-md bg-amber-50 px-1.5 py-0.5 text-[10px] font-medium text-amber-700 dark:bg-amber-900/20 dark:text-amber-300"
+                    :title="peakRateTitle(g)"
+                  >
+                    <Icon name="clock" size="xs" class="h-3 w-3" />
+                    {{ peakRateLabel(g) }}
+                  </span>
+                </div>
               </div>
               <div
                 v-if="publicGroups(section).length > 0"
@@ -107,16 +119,28 @@
                   <Icon name="globe" size="xs" class="h-3 w-3" />
                   {{ t('availableChannels.public') }}
                 </span>
-                <GroupBadge
+                <div
                   v-for="g in publicGroups(section)"
                   :key="`pub-${g.id}`"
-                  :name="g.name"
-                  :platform="g.platform as GroupPlatform"
-                  :subscription-type="(g.subscription_type || 'standard') as SubscriptionType"
-                  :rate-multiplier="g.rate_multiplier"
-                  :user-rate-multiplier="userGroupRates[g.id] ?? null"
-                  always-show-rate
-                />
+                  class="inline-flex flex-wrap items-center gap-1"
+                >
+                  <GroupBadge
+                    :name="g.name"
+                    :platform="g.platform as GroupPlatform"
+                    :subscription-type="(g.subscription_type || 'standard') as SubscriptionType"
+                    :rate-multiplier="g.rate_multiplier"
+                    :user-rate-multiplier="userGroupRates[g.id] ?? null"
+                    always-show-rate
+                  />
+                  <span
+                    v-if="hasPeakRate(g)"
+                    class="inline-flex items-center gap-1 rounded-md bg-amber-50 px-1.5 py-0.5 text-[10px] font-medium text-amber-700 dark:bg-amber-900/20 dark:text-amber-300"
+                    :title="peakRateTitle(g)"
+                  >
+                    <Icon name="clock" size="xs" class="h-3 w-3" />
+                    {{ peakRateLabel(g) }}
+                  </span>
+                </div>
               </div>
               <span v-if="section.groups.length === 0" class="text-xs text-gray-400">-</span>
             </div>
@@ -186,4 +210,16 @@ function exclusiveGroups(section: UserChannelPlatformSection): UserAvailableGrou
 function publicGroups(section: UserChannelPlatformSection): UserAvailableGroup[] {
   return section.groups.filter((g) => !g.is_exclusive)
 }
+
+function hasPeakRate(group: UserAvailableGroup): boolean {
+  return Boolean(group.peak_rate_enabled && group.peak_start && group.peak_end)
+}
+
+function peakRateLabel(group: UserAvailableGroup): string {
+  return `${group.peak_start}-${group.peak_end} ${group.peak_rate_multiplier}x`
+}
+
+function peakRateTitle(group: UserAvailableGroup): string {
+  return `高峰倍率：${group.peak_start}-${group.peak_end} ${group.peak_rate_multiplier}x；token 计费的图片 token 同样适用，图片按次计费不受高峰影响`
+}
 </script>
diff --git a/frontend/src/components/common/GroupBadge.vue b/frontend/src/components/common/GroupBadge.vue
index 3303d90982..2fc48b0185 100644
--- a/frontend/src/components/common/GroupBadge.vue
+++ b/frontend/src/components/common/GroupBadge.vue
@@ -20,6 +20,9 @@
         {{ labelText }}
       </template>
     </span>
+    <span v-if="hasPeakRate" :class="peakRateClass" :title="peakRateTitle">
+      {{ peakRateText }}
+    </span>
   </span>
 </template>
 
@@ -35,6 +38,10 @@ interface Props {
   subscriptionType?: SubscriptionType
   rateMultiplier?: number
   userRateMultiplier?: number | null // 用户专属倍率
+  peakRateEnabled?: boolean
+  peakStart?: string
+  peakEnd?: string
+  peakRateMultiplier?: number
   showRate?: boolean
   daysRemaining?: number | null // 剩余天数（订阅类型时使用）
   /**
@@ -50,6 +57,7 @@ const props = withDefaults(defineProps<Props>(), {
   showRate: true,
   daysRemaining: null,
   userRateMultiplier: null,
+  peakRateEnabled: false,
   alwaysShowRate: false
 })
 
@@ -67,6 +75,18 @@ const hasCustomRate = computed(() => {
   )
 })
 
+const hasPeakRate = computed(() => {
+  return Boolean(props.showRate && props.peakRateEnabled && props.peakStart && props.peakEnd)
+})
+
+const peakRateText = computed(() => {
+  return `${props.peakStart}-${props.peakEnd} ×${props.peakRateMultiplier ?? 1}`
+})
+
+const peakRateTitle = computed(() => {
+  return `高峰倍率：${peakRateText.value}`
+})
+
 // 是否显示右侧标签
 const showLabel = computed(() => {
   if (!props.showRate) return false
@@ -127,6 +147,10 @@ const labelClass = computed(() => {
   return `${base} bg-violet-200/60 text-violet-800 dark:bg-violet-800/40 dark:text-violet-300`
 })
 
+const peakRateClass = computed(() => {
+  return 'px-1.5 py-0.5 rounded text-[10px] font-semibold bg-amber-100 text-amber-700 dark:bg-amber-900/30 dark:text-amber-300'
+})
+
 // Badge color based on platform and subscription type
 const badgeClass = computed(() => {
   if (props.platform === 'anthropic') {
diff --git a/frontend/src/components/common/GroupOptionItem.vue b/frontend/src/components/common/GroupOptionItem.vue
index a46b4117df..44724fdd08 100644
--- a/frontend/src/components/common/GroupOptionItem.vue
+++ b/frontend/src/components/common/GroupOptionItem.vue
@@ -24,16 +24,25 @@
 
     <!-- Right: rate pill + checkmark (vertically centered to first row) -->
     <div class="flex shrink-0 items-center gap-2 pt-0.5">
-      <!-- Rate pill (platform color) -->
-      <span v-if="rateMultiplier !== undefined" :class="['inline-flex items-center whitespace-nowrap rounded-full px-3 py-1 text-xs font-semibold', ratePillClass]">
-        <template v-if="hasCustomRate">
-          <span class="mr-1 line-through opacity-50">{{ rateMultiplier }}x</span>
-          <span class="font-bold">{{ userRateMultiplier }}x</span>
-        </template>
-        <template v-else>
-          {{ rateMultiplier }}x {{ t('admin.groups.rateLabel') }}
-        </template>
-      </span>
+      <div class="flex shrink-0 flex-col items-end gap-1">
+        <!-- Rate pill (platform color) -->
+        <span v-if="rateMultiplier !== undefined" :class="['inline-flex items-center whitespace-nowrap rounded-full px-3 py-1 text-xs font-semibold', ratePillClass]">
+          <template v-if="hasCustomRate">
+            <span class="mr-1 line-through opacity-50">{{ rateMultiplier }}x</span>
+            <span class="font-bold">{{ userRateMultiplier }}x</span>
+          </template>
+          <template v-else>
+            {{ rateMultiplier }}x {{ t('admin.groups.rateLabel') }}
+          </template>
+        </span>
+        <span
+          v-if="hasPeakRate"
+          class="inline-flex items-center whitespace-nowrap rounded-full bg-amber-50 px-3 py-1 text-xs font-semibold text-amber-700 dark:bg-amber-900/20 dark:text-amber-300"
+          :title="peakRateTitle"
+        >
+          {{ peakRateText }}
+        </span>
+      </div>
       <!-- Checkmark -->
       <svg
         v-if="showCheckmark && selected"
@@ -63,6 +72,10 @@ interface Props {
   subscriptionType?: SubscriptionType
   rateMultiplier?: number
   userRateMultiplier?: number | null
+  peakRateEnabled?: boolean
+  peakStart?: string
+  peakEnd?: string
+  peakRateMultiplier?: number
   description?: string | null
   selected?: boolean
   showCheckmark?: boolean
@@ -72,7 +85,8 @@ const props = withDefaults(defineProps<Props>(), {
   subscriptionType: 'standard',
   selected: false,
   showCheckmark: true,
-  userRateMultiplier: null
+  userRateMultiplier: null,
+  peakRateEnabled: false
 })
 
 // Whether user has a custom rate different from default
@@ -85,6 +99,18 @@ const hasCustomRate = computed(() => {
   )
 })
 
+const hasPeakRate = computed(() => {
+  return Boolean(props.peakRateEnabled && props.peakStart && props.peakEnd)
+})
+
+const peakRateText = computed(() => {
+  return `${props.peakStart}-${props.peakEnd} ×${props.peakRateMultiplier ?? 1}`
+})
+
+const peakRateTitle = computed(() => {
+  return `高峰倍率：${peakRateText.value}`
+})
+
 // Rate pill color matches platform badge color
 const ratePillClass = computed(() => {
   switch (props.platform) {
diff --git a/frontend/src/components/payment/SubscriptionPlanCard.vue b/frontend/src/components/payment/SubscriptionPlanCard.vue
index 687f119e33..c69aabd898 100644
--- a/frontend/src/components/payment/SubscriptionPlanCard.vue
+++ b/frontend/src/components/payment/SubscriptionPlanCard.vue
@@ -43,6 +43,10 @@
           <span class="text-gray-400 dark:text-dark-500">{{ t('payment.planCard.rate') }}</span>
           <span class="font-medium text-gray-700 dark:text-gray-300">{{ rateDisplay }}</span>
         </div>
+        <div v-if="hasPeakRate" class="col-span-2 flex items-center justify-between gap-2">
+          <span class="text-gray-400 dark:text-dark-500">{{ t('payment.planCard.peakRate') }}</span>
+          <span class="text-right font-medium text-amber-700 dark:text-amber-300">{{ peakRateDisplay }}</span>
+        </div>
         <div v-if="plan.daily_limit_usd != null" class="flex items-center justify-between">
           <span class="text-gray-400 dark:text-dark-500">{{ t('payment.planCard.dailyLimit') }}</span>
           <span class="font-medium text-gray-700 dark:text-gray-300">${{ plan.daily_limit_usd }}</span>
@@ -140,6 +144,14 @@ const rateDisplay = computed(() => {
   return `×${Number(rate.toPrecision(10))}`
 })
 
+const hasPeakRate = computed(() => {
+  return Boolean(props.plan.peak_rate_enabled && props.plan.peak_start && props.plan.peak_end)
+})
+
+const peakRateDisplay = computed(() => {
+  return `${props.plan.peak_start}-${props.plan.peak_end} ×${props.plan.peak_rate_multiplier ?? 1}`
+})
+
 const MODEL_SCOPE_LABELS: Record<string, string> = {
   claude: 'Claude',
   gemini_text: 'Gemini',
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index eec916cfb5..913c43d930 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -2279,6 +2279,13 @@ export default {
         finalPricePreview: 'Final per-image price preview',
         notConfigured: 'Not configured'
       },
+      peakRate: {
+        enable: 'Enable peak rate multiplier',
+        peakStart: 'Peak start',
+        peakEnd: 'Peak end',
+        peakMultiplier: 'Peak multiplier',
+        multiplierHint: 'Applies to token billing multiplier; image tokens in token billing are also affected. 0 means peak token requests are billed at 0x.'
+      },
       modelsList: {
         title: 'Custom /v1/models Model List',
         hint: 'Only changes the /v1/models response. Whitelist model calls and account routing are unchanged.',
@@ -7264,6 +7271,7 @@ export default {
     planFeatures: 'Features',
     planCard: {
       rate: 'Rate',
+      peakRate: 'Peak Rate',
       dailyLimit: 'Daily',
       weeklyLimit: 'Weekly',
       monthlyLimit: 'Monthly',
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index 7780147ae4..b551d5159c 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -2361,6 +2361,13 @@ export default {
         finalPricePreview: '最终单张价格预览',
         notConfigured: '未配置'
       },
+      peakRate: {
+        enable: '启用高峰倍率',
+        peakStart: '高峰开始',
+        peakEnd: '高峰结束',
+        peakMultiplier: '高峰倍率',
+        multiplierHint: '作用于 token 计费倍率；token 计费的图片 token 同样适用，0 表示高峰 token 请求按 0 倍计费'
+      },
       modelsList: {
         title: '自定义 /v1/models 模型列表',
         hint: '仅影响 /v1/models 展示结果，不影响白名单模型调用和账号调度。',
@@ -7444,6 +7451,7 @@ export default {
     planFeatures: '功能特性',
     planCard: {
       rate: '倍率',
+      peakRate: '高峰倍率',
       dailyLimit: '日限额',
       weeklyLimit: '周限额',
       monthlyLimit: '月限额',
diff --git a/frontend/src/types/payment.ts b/frontend/src/types/payment.ts
index ac20b82e4f..a02ef1b78f 100644
--- a/frontend/src/types/payment.ts
+++ b/frontend/src/types/payment.ts
@@ -108,6 +108,10 @@ export interface SubscriptionPlan {
   group_platform?: string
   group_name?: string
   rate_multiplier?: number
+  peak_rate_enabled?: boolean
+  peak_start?: string
+  peak_end?: string
+  peak_rate_multiplier?: number
   daily_limit_usd?: number | null
   weekly_limit_usd?: number | null
   monthly_limit_usd?: number | null
diff --git a/frontend/src/views/admin/GroupsView.vue b/frontend/src/views/admin/GroupsView.vue
index aba7b89660..cea587111f 100644
--- a/frontend/src/views/admin/GroupsView.vue
+++ b/frontend/src/views/admin/GroupsView.vue
@@ -866,7 +866,7 @@
                 type="checkbox"
                 class="rounded border-gray-300 text-blue-600 focus:ring-blue-500"
               />
-              <span>启用高峰时段倍率</span>
+              <span>{{ t("admin.groups.peakRate.enable") }}</span>
             </label>
           </div>
           <div
@@ -874,7 +874,7 @@
             class="mb-4 grid grid-cols-3 gap-3"
           >
             <div>
-              <label class="input-label">高峰开始</label>
+              <label class="input-label">{{ t("admin.groups.peakRate.peakStart") }}</label>
               <input
                 v-model="createForm.peak_start"
                 type="time"
@@ -882,7 +882,7 @@
               />
             </div>
             <div>
-              <label class="input-label">高峰结束</label>
+              <label class="input-label">{{ t("admin.groups.peakRate.peakEnd") }}</label>
               <input
                 v-model="createForm.peak_end"
                 type="time"
@@ -890,7 +890,7 @@
               />
             </div>
             <div>
-              <label class="input-label">高峰倍率</label>
+              <label class="input-label">{{ t("admin.groups.peakRate.peakMultiplier") }}</label>
               <input
                 v-model.number="createForm.peak_rate_multiplier"
                 type="number"
@@ -898,6 +898,7 @@
                 min="0"
                 class="input"
                 placeholder="1"
+                :title="t('admin.groups.peakRate.multiplierHint')"
               />
             </div>
           </div>
@@ -2204,7 +2205,7 @@
                 type="checkbox"
                 class="rounded border-gray-300 text-blue-600 focus:ring-blue-500"
               />
-              <span>启用高峰时段倍率</span>
+              <span>{{ t("admin.groups.peakRate.enable") }}</span>
             </label>
           </div>
           <div
@@ -2212,7 +2213,7 @@
             class="mb-4 grid grid-cols-3 gap-3"
           >
             <div>
-              <label class="input-label">高峰开始</label>
+              <label class="input-label">{{ t("admin.groups.peakRate.peakStart") }}</label>
               <input
                 v-model="editForm.peak_start"
                 type="time"
@@ -2220,7 +2221,7 @@
               />
             </div>
             <div>
-              <label class="input-label">高峰结束</label>
+              <label class="input-label">{{ t("admin.groups.peakRate.peakEnd") }}</label>
               <input
                 v-model="editForm.peak_end"
                 type="time"
@@ -2228,7 +2229,7 @@
               />
             </div>
             <div>
-              <label class="input-label">高峰倍率</label>
+              <label class="input-label">{{ t("admin.groups.peakRate.peakMultiplier") }}</label>
               <input
                 v-model.number="editForm.peak_rate_multiplier"
                 type="number"
@@ -2236,6 +2237,7 @@
                 min="0"
                 class="input"
                 placeholder="1"
+                :title="t('admin.groups.peakRate.multiplierHint')"
               />
             </div>
           </div>
diff --git a/frontend/src/views/user/KeysView.vue b/frontend/src/views/user/KeysView.vue
index 598e88ed96..1aabf6b834 100644
--- a/frontend/src/views/user/KeysView.vue
+++ b/frontend/src/views/user/KeysView.vue
@@ -144,6 +144,10 @@
                   :subscription-type="row.group.subscription_type"
                   :rate-multiplier="row.group.rate_multiplier"
                   :user-rate-multiplier="userGroupRates[row.group.id]"
+                  :peak-rate-enabled="row.group.peak_rate_enabled"
+                  :peak-start="row.group.peak_start"
+                  :peak-end="row.group.peak_end"
+                  :peak-rate-multiplier="row.group.peak_rate_multiplier"
                 />
                 <span v-else class="text-sm text-gray-400 dark:text-dark-500">{{
                   t('keys.noGroup')
@@ -454,6 +458,10 @@
                 :subscription-type="(option as unknown as GroupOption).subscriptionType"
                 :rate-multiplier="(option as unknown as GroupOption).rate"
                 :user-rate-multiplier="(option as unknown as GroupOption).userRate"
+                :peak-rate-enabled="(option as unknown as GroupOption).peakRateEnabled"
+                :peak-start="(option as unknown as GroupOption).peakStart"
+                :peak-end="(option as unknown as GroupOption).peakEnd"
+                :peak-rate-multiplier="(option as unknown as GroupOption).peakRateMultiplier"
               />
               <span v-else class="text-gray-400">{{ t('keys.selectGroup') }}</span>
             </template>
@@ -464,6 +472,10 @@
                 :subscription-type="(option as unknown as GroupOption).subscriptionType"
                 :rate-multiplier="(option as unknown as GroupOption).rate"
                 :user-rate-multiplier="(option as unknown as GroupOption).userRate"
+                :peak-rate-enabled="(option as unknown as GroupOption).peakRateEnabled"
+                :peak-start="(option as unknown as GroupOption).peakStart"
+                :peak-end="(option as unknown as GroupOption).peakEnd"
+                :peak-rate-multiplier="(option as unknown as GroupOption).peakRateMultiplier"
                 :description="(option as unknown as GroupOption).description"
                 :selected="selected"
               />
@@ -1059,6 +1071,10 @@
               :subscription-type="option.subscriptionType"
               :rate-multiplier="option.rate"
               :user-rate-multiplier="option.userRate"
+              :peak-rate-enabled="option.peakRateEnabled"
+              :peak-start="option.peakStart"
+              :peak-end="option.peakEnd"
+              :peak-rate-multiplier="option.peakRateMultiplier"
               :description="option.description"
               :selected="
                 selectedKeyForGroup?.group_id === option.value ||
@@ -1123,6 +1139,10 @@ interface GroupOption {
   description: string | null
   rate: number
   userRate: number | null
+  peakRateEnabled: boolean
+  peakStart: string
+  peakEnd: string
+  peakRateMultiplier: number
   subscriptionType: SubscriptionType
   platform: GroupPlatform
 }
@@ -1351,6 +1371,10 @@ const groupOptions = computed(() =>
     description: group.description,
     rate: group.rate_multiplier,
     userRate: userGroupRates.value[group.id] ?? null,
+    peakRateEnabled: group.peak_rate_enabled,
+    peakStart: group.peak_start,
+    peakEnd: group.peak_end,
+    peakRateMultiplier: group.peak_rate_multiplier,
     subscriptionType: group.subscription_type,
     platform: group.platform
   }))
diff --git a/frontend/src/views/user/PaymentView.vue b/frontend/src/views/user/PaymentView.vue
index baa0cb244e..092efac9fd 100644
--- a/frontend/src/views/user/PaymentView.vue
+++ b/frontend/src/views/user/PaymentView.vue
@@ -121,6 +121,12 @@
                       <span :class="['text-lg font-bold', planTextClass]">×{{ selectedPlan.rate_multiplier ?? 1 }}</span>
                     </div>
                   </div>
+                  <div v-if="planHasPeakRate(selectedPlan)">
+                    <span class="text-xs text-gray-400 dark:text-gray-500">{{ t('payment.planCard.peakRate') }}</span>
+                    <div class="text-sm font-semibold text-amber-700 dark:text-amber-300">
+                      {{ planPeakRateLabel(selectedPlan) }}
+                    </div>
+                  </div>
                   <div v-if="selectedPlan.daily_limit_usd != null">
                     <span class="text-xs text-gray-400 dark:text-gray-500">{{ t('payment.planCard.dailyLimit') }}</span>
                     <div class="text-lg font-semibold text-gray-800 dark:text-gray-200">${{ selectedPlan.daily_limit_usd }}</div>
@@ -194,6 +200,7 @@
                       </div>
                       <div class="flex flex-wrap gap-x-3 text-[11px] text-gray-400 dark:text-gray-500">
                         <span>{{ t('payment.planCard.rate') }}: ×{{ sub.group?.rate_multiplier ?? 1 }}</span>
+                        <span v-if="subscriptionHasPeakRate(sub)">{{ t('payment.planCard.peakRate') }}: {{ subscriptionPeakRateLabel(sub) }}</span>
                         <span v-if="sub.group?.daily_limit_usd == null && sub.group?.weekly_limit_usd == null && sub.group?.monthly_limit_usd == null">{{ t('payment.planCard.quota') }}: {{ t('payment.planCard.unlimited') }}</span>
                         <span v-if="sub.expires_at">{{ t('userSubscriptions.daysRemaining', { days: getDaysRemaining(sub.expires_at) }) }}</span>
                         <span v-else>{{ t('userSubscriptions.noExpiration') }}</span>
@@ -297,6 +304,16 @@ function getDaysRemaining(expiresAt: string): number {
   return Math.max(0, Math.ceil(diff / (1000 * 60 * 60 * 24)))
 }
 
+function subscriptionHasPeakRate(sub: { group?: { peak_rate_enabled?: boolean; peak_start?: string; peak_end?: string } | null }): boolean {
+  const group = sub.group
+  return Boolean(group?.peak_rate_enabled && group.peak_start && group.peak_end)
+}
+
+function subscriptionPeakRateLabel(sub: { group?: { peak_start?: string; peak_end?: string; peak_rate_multiplier?: number } | null }): string {
+  const group = sub.group
+  return `${group?.peak_start}-${group?.peak_end} ×${group?.peak_rate_multiplier ?? 1}`
+}
+
 const loading = ref(true)
 const submitting = ref(false)
 const errorMessage = ref('')
@@ -695,6 +712,14 @@ const planValiditySuffix = computed(() => {
   return `${selectedPlan.value.validity_days}${t('payment.days')}`
 })
 
+function planHasPeakRate(plan: SubscriptionPlan): boolean {
+  return Boolean(plan.peak_rate_enabled && plan.peak_start && plan.peak_end)
+}
+
+function planPeakRateLabel(plan: SubscriptionPlan): string {
+  return `${plan.peak_start}-${plan.peak_end} ×${plan.peak_rate_multiplier ?? 1}`
+}
+
 function selectPlan(plan: SubscriptionPlan) {
   selectedPlan.value = plan
   errorMessage.value = ''
diff --git a/frontend/src/views/user/SubscriptionsView.vue b/frontend/src/views/user/SubscriptionsView.vue
index 31d63d0d7f..3af64b29e9 100644
--- a/frontend/src/views/user/SubscriptionsView.vue
+++ b/frontend/src/views/user/SubscriptionsView.vue
@@ -49,6 +49,12 @@
                 <p v-if="subscription.group?.description" class="mt-0.5 text-xs text-gray-500 dark:text-dark-400">
                   {{ subscription.group.description }}
                 </p>
+                <div class="mt-1 flex flex-wrap gap-x-3 gap-y-1 text-[11px] text-gray-400 dark:text-gray-500">
+                  <span>{{ t('payment.planCard.rate') }}: ×{{ subscription.group?.rate_multiplier ?? 1 }}</span>
+                  <span v-if="subscriptionHasPeakRate(subscription)" class="text-amber-700 dark:text-amber-300">
+                    {{ t('payment.planCard.peakRate') }}: {{ subscriptionPeakRateLabel(subscription) }}
+                  </span>
+                </div>
               </div>
             </div>
             <div class="flex items-center gap-2">
@@ -271,6 +277,16 @@ const appStore = useAppStore()
 const subscriptions = ref<UserSubscription[]>([])
 const loading = ref(true)
 
+function subscriptionHasPeakRate(subscription: UserSubscription): boolean {
+  const group = subscription.group
+  return Boolean(group?.peak_rate_enabled && group.peak_start && group.peak_end)
+}
+
+function subscriptionPeakRateLabel(subscription: UserSubscription): string {
+  const group = subscription.group
+  return `${group?.peak_start}-${group?.peak_end} ×${group?.peak_rate_multiplier ?? 1}`
+}
+
 async function loadSubscriptions() {
   try {
     loading.value = true