Update app.py

app.py

@@ -20,7 +20,7 @@ openai_api_key = st.text_input("Enter your OpenAI API Key:", type="password")
 # Dropdown to select the model
 model_choice = st.selectbox(
     "Select the model:",
-    ["gpt-3.5", "gpt-3.5-turbo", "gpt-4", "gpt-4-turbo","gpt-4-0"]
+    ["gpt-3.5", "gpt-3.5-turbo", "gpt-4", "gpt-4-turbo","gpt-4o"]
 )
 
 # Create sessionMessages if not already exists