Update llm model 8b

src/streamlit_app.py

@@ -66,7 +66,7 @@ Answer clearly and concisely.
 
     with st.spinner("Thinking..."):
         response = client.chat.completions.create(
-            model="llama-3.3-70b-versatile",
+            model="llama3-8b-8192",
             messages=[
                 {"role": "system", "content": "You are a helpful assistant."},
                 {"role": "user", "content": prompt},