Update multi_agent.py

multi_agent.py

@@ -32,7 +32,7 @@ class MultyAgentSystem:
         )
         self.qwen_model = LiteLLMModel("groq/qwen-qwq-32b", **common)
         self.fallback_model = LiteLLMModel("groq/llama3-70b-8k", **common)
-        self.llama_model = LiteLLMModel("groq/llama-4-scout-17b-16e-instruct", **common)
+        self.llama_model = LiteLLMModel("groq/llama-3.3-70b-versatile", **common)
 
         self.verification_limit = int(os.getenv("VERIFY_WORD_LIMIT", "75"))