Update agent.py

agent.py

@@ -13,7 +13,7 @@ from langchain_community.vectorstores import SupabaseVectorStore
 from langchain_core.messages import SystemMessage, HumanMessage
 from langchain_core.tools import tool
 from langchain.tools.retriever import create_retriever_tool
-from smolagents import CodeAgent, InferenceClientModel
+from langchain_openai import ChatOpenAI
 
 
 load_dotenv()
@@ -130,14 +130,7 @@ tools = [
 def build_graph(provider: str = "huggingface"):
     """Build the graph"""
     # Load environment variables from .env file
-    if provider == "google":
-        # Google Gemini
-        llm = ChatGoogleGenerativeAI(model="gemini-2.0-flash", temperature=0)
-    elif provider == "groq":
-        # Groq https://console.groq.com/docs/models
-        llm = ChatGroq(model="qwen-qwq-32b", temperature=0) # optional : qwen-qwq-32b gemma2-9b-it
-    elif provider == "huggingface":
-         llm = InferenceClientModel()
+    llm = ChatOpenAI(model="gpt-4o")
 
     else:
         raise ValueError("Invalid provider. Choose 'google', 'groq' or 'huggingface'.")