Update agent.py

agent.py

@@ -23,7 +23,7 @@ def _llm():
     provider = os.getenv("LLM_PROVIDER", "groq").lower()
     if provider == "mistral":
         from langchain_mistralai import ChatMistralAI
-        return ChatMistralAI(model=os.getenv("MISTRAL_BIG", "mistral-large-latest"), apiKey=os.getenv("MISTRAL_API_KEY"), temperature=0)
+        return ChatMistralAI(model=os.getenv("MISTRAL_BIG", "mistral-small-latest"), temperature=0)
     elif provider == "huggingface":
         from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace
         repo_id = os.getenv("HF_MODEL_ID", "mistralai/Mistral-Small-24B-Instruct-v0.1")