Update agent.py

agent.py

@@ -3,6 +3,7 @@ from dotenv import load_dotenv
 from langgraph.graph import START, StateGraph, MessagesState
 from langgraph.prebuilt import tools_condition, ToolNode
 from langchain_groq import ChatGroq
+from langchain_openai import ChatOpenAI
 from langchain_community.tools.tavily_search import TavilySearchResults
 from langchain_community.document_loaders import WikipediaLoader, ArxivLoader
 from langchain_community.vectorstores import SupabaseVectorStore
@@ -151,7 +152,7 @@ tools = [
 def build_graph():
     """Build the graph"""
     # llm = ChatGroq(model="compound-beta", temperature=0)
-    llm = ChatGroq(model="compound-beta", temperature=0, api_key=os.getenv("GROQ_API_KEY"))
+    llm = ChatOpenAI(model = "gpt-3.5-turbo", temperature=0)
     # Bind tools to LLM
     llm_with_tools = llm.bind_tools(tools)