Update app.py

app.py

@@ -14,7 +14,8 @@ import sys
 import os
 
 API_BASE = "env"
-api_key = os.environ['OPENAI_API_KEY']
+api_key = os.environ['API_KEY']
+oai_api_key = os.environ['OPENAI_API_KEY']
 base_url = os.environ.get('OPENAI_BASE_URL', "https://api.openai.com/v1")
 def_models = '["gpt-4", "gpt-4-0125-preview", "gpt-4-0613", "gpt-4-1106-preview", "gpt-4-turbo", "gpt-4-turbo-2024-04-09", "gpt-4-turbo-preview", "chatgpt-4o-latest", "gpt-4o", "gpt-4o-2024-05-13", "gpt-4o-2024-08-06", "gpt-4o-mini", "gpt-4o-mini-2024-07-18"]'