Update app/services/llm_engine.py

app/services/llm_engine.py

@@ -179,17 +179,18 @@ class LLMEngine:
             "is_correct": true
         }}
         """
+#
         try:
+            # Perhatikan: Kita panggil _execute_with_retry, bukan self.client.create
             response_content = await self._execute_with_retry(
-                messages=[{"role": "user", "content": prompt}],
-                model="llama-3.3-70b-versatile",
-                response_format={"type": "json_object"}
+                messages=messages,
+                model="llama-3.1-8b-instant", # Model ringan untuk chat
+                temperature=0.6 
             )
+            return response_content
             
-            return json.loads(response_content)
-        except:
-            print(f"ERROR Evaluate answer: {e}")
-            return {"score": 0, "feedback": "Error menilai.", "is_correct": False}
+        except Exception as e:
+            return f"Maaf, error sistem: {str(e)}"
 
     async def casual_chat(self, user_text: str, history: list = [], is_role_empty: bool = False):