Update app.py

app.py

@@ -12,7 +12,10 @@ client = OpenAI(
 st.title("AWS Well-Architected Review")
 st.write("Get recommendations for optimizing your AWS architecture.")
 
-# Session state to store messages (conversation history)
+
+if "nvidia_model" not in st.session_state:
+    st.session_state["nvidia_model"] = "nvidia/llama-3.1-nemotron-70b-instruct"
+
 if "messages" not in st.session_state:
     st.session_state.messages = [
         {"role": "system", "content": "You are an assistant that provides recommendations based on AWS Well-Architected Review best practices. Focus on the 5 pillars: Operational Excellence, Security, Reliability, Performance Efficiency, and Cost Optimization."}