diff --git a/src/components/image-editor/model3d-generation/Model3dGenerationFormModel.ts b/src/components/image-editor/model3d-generation/Model3dGenerationFormModel.ts
index 4a1101641..9dd729390 100644
--- a/src/components/image-editor/model3d-generation/Model3dGenerationFormModel.ts
+++ b/src/components/image-editor/model3d-generation/Model3dGenerationFormModel.ts
@@ -32,6 +32,8 @@ export function isModel3dGenerationMode(
 export const MODEL3D_GENERATION_DIALOG_LABEL = '3D 模型生成';
 export const MODEL3D_GENERATION_SUBMIT_LABEL = '生成 3D 模型';
 export const MODEL3D_PRICING_UNAVAILABLE_REASON = '3D 模型定价尚未配置';
+/** 面板本身不是 3D 生成模式：与「定价缺失」是两回事，不能共用一句话。 */
+export const MODEL3D_MODE_UNSUPPORTED_REASON = '当前面板不是 3D 模型模式';
 
 /**
  * 档位是唯一给用户看的参数面：每个档位固定映射成 provider 的完整贴图 / 几何组合，
@@ -192,7 +194,7 @@ export function resolveModel3dGenerationQuote(
   | { ok: true; price: number; endpoint: Model3dPricingEndpoint }
   | { ok: false; reason: string } {
   if (!isModel3dGenerationMode(dialog.mode)) {
-    return { ok: false, reason: MODEL3D_PRICING_UNAVAILABLE_REASON };
+    return { ok: false, reason: MODEL3D_MODE_UNSUPPORTED_REASON };
   }
   const paramsResult = resolveModel3dGenerationParams({
     tier: dialog.model3dTier ?? 'textured-standard',