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feat(billing): add DeepSeek V4 Pro / Flash fallback pricing

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Pricing source: https://api-docs.deepseek.com/quick_start/pricing

deepseek-v4-pro:  input $0.435/M, output $0.87/M, cache_read $0.003625/M
deepseek-v4-flash: input $0.14/M,  output $0.28/M, cache_read $0.0028/M

Also map legacy aliases deepseek-chat / deepseek-reasoner → v4-flash.
This commit is contained in:
alfadb
2026-06-16 19:37:02 +08:00
parent b8a482e127
commit c906bf000e
2 changed files with 34 additions and 0 deletions
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backend/internal/service/billing_service.go
+30
View File
@@ -294,6 +294,24 @@ func (s *BillingService) initFallbackPricing() {
CacheReadPricePerTokenPriority: 0.35e-6,
SupportsCacheBreakdown: false,
}
// DeepSeek V4 Pro
// Source: https://api-docs.deepseek.com/quick_start/pricing
s.fallbackPrices["deepseek-v4-pro"] = &ModelPricing{
InputPricePerToken: 4.35e-7, // $0.435 per MTok
OutputPricePerToken: 8.7e-7, // $0.87 per MTok
CacheReadPricePerToken: 3.625e-9, // $0.003625 per MTok
SupportsCacheBreakdown: false,
}
// DeepSeek V4 Flash
// Source: https://api-docs.deepseek.com/quick_start/pricing
s.fallbackPrices["deepseek-v4-flash"] = &ModelPricing{
InputPricePerToken: 1.4e-7, // $0.14 per MTok
OutputPricePerToken: 2.8e-7, // $0.28 per MTok
CacheReadPricePerToken: 2.8e-9, // $0.0028 per MTok
SupportsCacheBreakdown: false,
}
// Codex 族兜底统一按 GPT-5.3 Codex 价格计费
s.fallbackPrices["gpt-5.3-codex"] = &ModelPricing{
InputPricePerToken: 1.5e-6, // $1.5 per MTok
@@ -344,6 +362,18 @@ func (s *BillingService) getFallbackPricing(model string) *ModelPricing {
return s.fallbackPrices["gemini-3.1-pro"]
}
// DeepSeek V4 系列
if strings.Contains(modelLower, "deepseek-v4-flash") {
return s.fallbackPrices["deepseek-v4-flash"]
}
if strings.Contains(modelLower, "deepseek-v4-pro") {
return s.fallbackPrices["deepseek-v4-pro"]
}
// deepseek-chat / deepseek-reasoner → V4 Flash（官方兼容别名）
if strings.Contains(modelLower, "deepseek-chat") || strings.Contains(modelLower, "deepseek-reasoner") {
return s.fallbackPrices["deepseek-v4-flash"]
}
// OpenAI 仅匹配已知 GPT-5/Codex 族，避免未知 OpenAI 型号误计价。
if normalized := normalizeKnownOpenAICodexModel(modelLower); normalized != "" {
switch normalized {
backend/internal/service/billing_service_test.go
+4
View File
@@ -352,6 +352,10 @@ func TestGetFallbackPricing_FamilyMatching(t *testing.T) {
{name: "openai legacy gpt5.1 codex falls back to gpt5.3 codex", model: "gpt-5.1-codex", expectedInput: 1.5e-6},
{name: "openai legacy codex mini latest falls back to gpt5.3 codex", model: "codex-mini-latest", expectedInput: 1.5e-6},
{name: "openai unknown no fallback", model: "gpt-unknown-model", expectNilPricing: true},
{name: "deepseek v4 pro", model: "deepseek-v4-pro", expectedInput: 4.35e-7},
{name: "deepseek v4 flash", model: "deepseek-v4-flash", expectedInput: 1.4e-7},
{name: "deepseek chat alias → flash", model: "deepseek-chat", expectedInput: 1.4e-7},
{name: "deepseek reasoner alias → flash", model: "deepseek-reasoner", expectedInput: 1.4e-7},
{name: "non supported family", model: "qwen-max", expectNilPricing: true},
}