增加2.5模型调用

backend/internal/billing/defaults.go

@@ -23,6 +23,8 @@ func DefaultBillingPriceRules() []PriceRule {
 	rules := []PriceRule{
 		{ID: "base-volcengine-jimeng-seedream46", Provider: "volcengine-visual", Capability: "image.generate", ReqKey: "jimeng_seedream46_cvtob", Unit: UnitImage, StandardUnitPriceFen: 20, Note: "即梦4.6公开资源包基准。", Source: catalogSource("https://www.volcengine.com/activity/jimeng")},
 		{ID: "base-evolink-gpt-image-2", Provider: "evolink", Capability: "image.generate", ReqKey: "gpt-image-2", Unit: UnitImage, StandardUnitPriceFen: 34, Note: "medium / 1K / 1:1 / 无参考图基准。", Source: catalogSource("https://evolink.ai/zh/gpt-image-2"), Dimensions: evolinkDimensions()},
+		evolink25PriceRule("gpt-image-2.5-flare", "https://evolink.ai/gpt-image-2-5"),
+		evolink25PriceRule("gpt-image-2.5-sunburst", "https://evolink.ai/zh/gpt-image-2-5-sunburst"),
 		{ID: "base-bailian-wan27-image-pro", Provider: "bailian", Capability: "image.generate", ReqKey: "wan2.7-image-pro", Unit: UnitImage, StandardUnitPriceFen: 50, Source: catalogSource("https://help.aliyun.com/zh/model-studio/wan2-7-image-pro")},
 		{ID: "base-seedream-5-0-pro", Provider: "seedream", Capability: "image.generate", ReqKey: Seedream50ProModel, Unit: UnitImage, StandardUnitPriceFen: 30, Note: "基础生图：1K/1.5K ¥0.30，2K ¥0.60；首张输入图免费，额外输入图 ¥0.02/张。", Source: catalogSource("https://docs.volcengine.com/docs/82379/1544106?lang=zh"), Dimensions: seedreamDimensions()},
 		{ID: "base-seedream-5-0-pro-layers", Provider: "seedream", Capability: "image.generate", ReqKey: Seedream50ProModel, Unit: UnitImage, StandardUnitPriceFen: 15, Conditions: Conditions{"layerDecomposition": true}, Priority: 10, Note: "图层拆分：≤261万像素 ¥0.15/张，>261万像素 ¥0.30/张；最多预留底图加16个图层，完成后按每张实际像素结算。", Source: catalogSource("https://docs.volcengine.com/docs/82379/1544106?lang=zh"), Dimensions: seedreamDimensions()},
@@ -86,6 +88,30 @@ func evolinkDimensions() []ParameterDimension {
 	}
 }
 
+func evolink25PriceRule(model, sourceURL string) PriceRule {
+	dimensions := evolinkDimensions()
+	dimensions[0] = ParameterDimension{
+		Key: "quality", Label: "生成质量", BaselineValue: "medium", DefaultValue: "medium",
+		Tiers: []ParameterTier{
+			{Value: "low", Label: "快速", StandardFactor: 4.0 / 9, MarkupMultiplier: DefaultBillingMarkupMultiplier, Enabled: true},
+			{Value: "medium", Label: "标准", StandardFactor: 1, MarkupMultiplier: DefaultBillingMarkupMultiplier, Enabled: true},
+			{Value: "high", Label: "精细", StandardFactor: 35.0 / 9, MarkupMultiplier: DefaultBillingMarkupMultiplier, Enabled: true},
+		},
+	}
+	// This integration exposes only 1K. Do not inherit Image 2's 2K/4K estimates.
+	dimensions[1].Tiers = dimensions[1].Tiers[:1]
+	dimensions[2].Tiers = append(dimensions[2].Tiers, ParameterTier{Value: "other", Match: map[string]any{}, StandardFactor: 1, MarkupMultiplier: DefaultBillingMarkupMultiplier, Enabled: true})
+	return PriceRule{
+		ID: "base-evolink-" + model, Provider: "evolink", Capability: "image.generate", ReqKey: model,
+		Unit: UnitImage, StandardUnitPriceFen: 9, Dimensions: dimensions,
+		Note: "1K 基础输出估算：low/medium/high 成本为 ¥0.04/¥0.09/¥0.35；输入费用未单独加收，非上游实际 token 账单。",
+		Source: map[string]any{
+			"url": sourceURL, "observedAt": "2026-09-23", "currency": "USD", "unitPrice": 0.012, "fxRate": 7.2,
+			"basis": "1024×1024、无参考图输出费用估算：low 约 $0.0053，medium 约 $0.012，high 约 $0.0474；人民币标准成本向上取整到分。参考图和提示词会影响上游实扣。",
+		},
+	}
+}
+
 // NormalizeBillingParameters derives quote inputs from the persisted generation
 // payload. Explicit parameters are retained only as a fallback for values the
 // payload does not carry.