Update ai_engine.js

ai_engine.js

@@ -19,8 +19,8 @@ const getModelId = (modelName) => {
     case "gpt": case "gpt-5.4-nano": return "openai/gpt-5.4-nano";
     case "qwen-non":                 return "qwen/qwen3-vl-30b-a3b-instruct";
     case "bytedance-1.6":            return "bytedance-seed/seed-1.6-flash:floor";
-    case "mistral-small":            return "mistralai/mistral-small-2603";
-    case "grok-4.3":                 return "x-ai/grok-4.3";
+    case "mistral-small":            return "mistralai/mistral-small-2603:floor";
+    case "grok-4.3":                 return "x-ai/grok-4.3:floor";
     case "qwen": default:            return "qwen/qwen3-vl-30b-a3b-thinking:floor";
   }
 };