diff --git a/src/config/zod-schema.core.ts b/src/config/zod-schema.core.ts
index 22c589c8490..25ef5d54346 100644
--- a/src/config/zod-schema.core.ts
+++ b/src/config/zod-schema.core.ts
@@ -192,14 +192,7 @@ export const ModelCompatSchema = z
     maxTokensField: z
       .union([z.literal("max_completion_tokens"), z.literal("max_tokens")])
       .optional(),
-    thinkingFormat: z
-      .union([
-        z.literal("openai"),
-        z.literal("zai"),
-        z.literal("qwen"),
-        z.literal("qwen-chat-template"),
-      ])
-      .optional(),
+    thinkingFormat: z.union([z.literal("openai"), z.literal("zai"), z.literal("qwen")]).optional(),
     requiresToolResultName: z.boolean().optional(),
     requiresAssistantAfterToolResult: z.boolean().optional(),
     requiresThinkingAsText: z.boolean().optional(),