v3

app.py

@@ -13,7 +13,10 @@ if "messages" not in st.session_state:
 for message in st.session_state.messages:
     with st.chat_message(message["role"]):
         st.markdown(message["content"])
-
+        
+if "messages" not in st.session_state or st.sidebar.button("Clear message history"):
+    st.session_state["messages"] = [{"role": "assistant", "content": "How can I help you?"}]
+    
 openai.api_key = st.sidebar.text_input("OpenAI API Key", type="password")
 
 if "openai.api_key" not in st.session_state:
@@ -37,6 +40,7 @@ if prompt := st.chat_input("What is up?"):
                 {"role": m["role"], "content": m["content"]}
                 for m in st.session_state.messages
             ],
+            openai_api_key = openai.api_key,
             max_tokens=12000,
             stream=True,
         ):