update

app.py

@@ -11,7 +11,8 @@ from typing import Dict
 import operator
 from typing import  Annotated
 
-from langchain_groq import ChatGroq
+# from langchain_groq import ChatGroq
+from langchain_openai import ChatOpenAI
 from langchain_core.messages import HumanMessage
 
 from langgraph.graph import START, END, StateGraph, MessagesState
@@ -23,9 +24,11 @@ from agent_utils import wiki_ret, arxiv_ret, tavily_ret, handle_file_tool, add,
 # --- Constants ---
 DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
-groq_api_key = os.getenv("GROQ_API_KEY")
+# groq_api_key = os.getenv("GROQ_API_KEY")
+openai_api_key = os.getenv("OPENAI_API_KEY")
 tools = [wiki_ret, arxiv_ret, tavily_ret, handle_file_tool, add, subtract, division, multiplication, mode]
-llm = ChatGroq(api_key=groq_api_key, model="gemma2-9b-it")
+# llm = ChatGroq(api_key=groq_api_key, model="gemma2-9b-it")
+llm = ChatOpenAI(api_key= openai_api_key, model = "gpt-4.1-2025-04-14")
 # llm_with_tools = llm.bind_tools(tools)
 # class GraphState(TypedDict):
 #     messages: str #Annotated[Dict, operator.add]

requirements.txt

@@ -1,6 +1,7 @@
 gradio
 requests
 langchain-groq
+langchain-openai
 langchain-community
 langchain-core
 langchain