Update app.py

app.py

@@ -115,7 +115,7 @@ elif st.session_state['step'] == 4:
             with st.spinner("Generating your post... ✨"):
                 try:
                     response = client.chat.completions.create(
-                        model="mixtral-8x7b-32768",
+                        model="llama-3.1-8b-instant",
                         messages=[{"role": "user", "content": prompt}],
                         max_tokens=600
                     )