Update chatbot_advisor.py

chatbot_advisor.py

@@ -2,6 +2,7 @@ from langgraph.graph import StateGraph, START, END
 from typing import TypedDict, Annotated
 from langchain_core.messages import HumanMessage, BaseMessage, AIMessage, SystemMessage
 from langchain_openai import ChatOpenAI
+from langchain_groq import ChatGroq
 from langgraph.checkpoint.memory import MemorySaver
 from langgraph.graph.message import add_messages
 from langgraph.prebuilt import ToolNode, tools_condition
@@ -42,8 +43,8 @@ tools = [tavily_search]
 # =====================================================
 # LLM CONFIGURATION
 # =====================================================
-llm = ChatOpenAI(
-    model="gpt-4.1-nano",
+llm = ChatGroq(
+    model="openai/gpt-oss-120b",
     streaming=True
 ).bind_tools(tools)