How to get OpenAI o4-mini-deep-research to work?

[xoChrisCo]

Looking at this thread, I see that o4-mini-deep-research should be available, but I cannot get it to work.

I added 4-mini-deep-research to the .env file:
OPENAI_MODELS=o4-mini,o4-mini-deep-research,o3,gpt-4.1,gpt-4o-mini,gpt-4o,gpt-3.5-turbo

When I chat with this model, I get error:

Something went wrong. Here's the specific error message we encountered: An error occurred while processing the request: 404 This model is only supported in v1/responses and not in v1/chat/completions. Troubleshooting URL: https://js.langchain.com/docs/troubleshooting/errors/MODEL_NOT_FOUND/

I also tried o4-mini-deep-research-2025-06-26 as per the OpenAI documentation. Same error.

Am I doing something wrong? Couldn't find any hints in the documentation either.

[danny-avila]

From the parameters panel (or agent builder):

[danny-avila]