AI agent using chatgpt o-1 pro doesn't work

[Idan1]

Hello,

I’m setting an AI agent using chatgpt o-1 pro but it sends me an error saying:

“404 This model is only supported in v1/responses and not in v1/chat/completions”

4.1 mini works for example, but this one doesn’t.

In the workflow I simply use a manual trigger and an AI Agent using chatgpt o-1 pro.

Thank you!

[fahmiiireza]

Hi there, the error is shown because in the background, the AI Agent is calling the openai API of v1/chat/completions, and as you can see in the error the o-1 pro is not available through this API, which what the n8n is calling for it’s AI Agent

if you want to use the o-1 pro, i think you can use the http request node for it and call the v1/responses API of the openai, which you can use this documentation for
https://platform.openai.com/docs/api-reference/responses

while for the supported model of openAI that you can use for the AI Agent, you can refer to this documentation
https://platform.openai.com/docs/api-reference/chat/create

but in short, you can use any 4o or 4.1 models for the AI Agent with no issue

hope it helps