Update app.py

app.py

@@ -95,7 +95,7 @@ with st.sidebar:
 
     st.header("Configuration")
 
-    openai_api_key = st.text_input(
+    st.text_input(
         label = "OpenAI API Key:",
         help="Required for OpenAI Models",
         type="password",
@@ -143,7 +143,7 @@ if prompt := st.chat_input("How can I help you understand this bill?"):
         st.warning("Enter API key to chat")
         st.stop()
     else:
-        client = OpenAI(api_key=openai_api_key)
+        client = OpenAI(api_key=st.session_state["openai_api_key"])
 
     with st.chat_message("user"):
         st.markdown(prompt)