OpenAI ChatGPT 5.2 model only works in Responses API #570
Description
So I have switched to the openai API method, selcting chatgpt 5.2. I get this error when I try and have it reply to an email
ChatGPT - Error
OpenAI ChatGPT API request failed: 404 , Detail: This is not a chat model and thus not supported in the v1/chat/completions endpoint. Did you mean to use v1/completions? {"error":{"message":"This is not a chat model and thus not supported in the v1/chat/completions endpoint. Did you mean to use v1/completions?","type":"invalid_request_error","param":"model","code":null}}I have switched to 4.1 and it works fine.
Bit of research returns this on the above error:
That error means you’re calling the old v1/chat/completions endpoint with a model that only works on the newer Responses API (or otherwise isn’t a “chat model” on that endpoint). So the fix is: use the Responses API, or switch to a chat-capable model for chat/completions
Originally posted by @LSB-Web-Design in #568