修复模型引用与账单展示

apps/api/internal/httpapi/handlers.go

@@ -867,7 +867,7 @@ func (s *Server) estimatePricing(w http.ResponseWriter, r *http.Request) {
 		writeError(w, http.StatusBadRequest, "invalid json body")
 		return
 	}
-	model, _ := body["model"].(string)
+	model := requestModelName(body)
 	kind, _ := body["kind"].(string)
 	if kind == "" {
 		kind = "chat.completions"
@@ -997,7 +997,7 @@ func (s *Server) createTask(kind string, compatible bool) http.Handler {
 			writeError(w, status, err.Error(), clients.ErrorCode(err))
 			return
 		}
-		model, _ := body["model"].(string)
+		model := requestModelName(body)
 		if model == "" {
 			writeError(w, http.StatusBadRequest, "model is required")
 			return
@@ -1254,6 +1254,27 @@ func apiKeyScopeAllowed(user *auth.User, kind string) bool {
 	return false
 }
 
+func requestModelName(body map[string]any) string {
+	if body == nil {
+		return ""
+	}
+	return modelNameFromValue(body["model"])
+}
+
+func modelNameFromValue(value any) string {
+	switch typed := value.(type) {
+	case string:
+		return strings.TrimSpace(typed)
+	case map[string]any:
+		for _, key := range []string{"modelId", "model_id", "modelName", "model_name", "id", "name"} {
+			if model := modelNameFromValue(typed[key]); model != "" {
+				return model
+			}
+		}
+	}
+	return ""
+}
+
 func scopeForTaskKind(kind string) string {
 	switch kind {
 	case "chat.completions", "responses":

apps/api/internal/httpapi/request_preparation_test.go

@@ -37,6 +37,18 @@ func TestRequestAssetFromValueDetectsDataURLAndRawBase64(t *testing.T) {
 	}
 }
 
+func TestRequestModelNameSupportsObjectModelReference(t *testing.T) {
+	got := requestModelName(map[string]any{
+		"model": map[string]any{
+			"providerId": "easyai",
+			"modelId":    "doubao-seedream-5-0-lite-260128",
+		},
+	})
+	if got != "doubao-seedream-5-0-lite-260128" {
+		t.Fatalf("expected modelId from object model reference, got %q", got)
+	}
+}
+
 func TestRequestAssetFromValueDetectsGeminiInlineData(t *testing.T) {
 	payload := base64.StdEncoding.EncodeToString([]byte("inline gemini image"))
 	decoded, ok, err := requestAssetFromValue(