Update app/services/llm_engine.py

app/services/llm_engine.py

@@ -133,7 +133,7 @@ class LLMEngine:
         try:
             response_content = await self._execute_with_retry(
                 messages=[{"role": "user", "content": prompt}],
-                model="llama-3.3-8b-instant",
+                model="llama-3.3-70b-versatile",
                 temperature=0.5,
                 response_format={"type": "json_object"}
             )