GPT-4o Assistant Connection in Make Workflows - Error. [400]

Hi Makers,

In an effort to update the GPT Assistants in my MAKE workflows, I am receiving a [400] error stating ‘gpt-4o’ cannot be used with the Assistants API in v1.

When on the GPT assistants side, the playground interface, the API is at the latest and should be able to be called within the workflow.

Here is the error

The operation failed with an error. [400] The requested model ‘gpt-4o’ cannot be used with the Assistants API in v1. Follow the migration guide to upgrade to v2:

Has anyone fixed this?


Welcome to the Make community!

GPT-4o is still not available for use with Assistants in Make yet.

samliewrequest private consultation

Join the unofficial Make Discord server to chat with us!


Thanks for the quick heads up Samliew :slight_smile:


It looks like the HTTP request just needs to be updated to post to the V2 URL at


That’s a great idea! I’m sure others would agree that this is a nice feature to have.

You can submit this suggestion to the Idea exchange, under App improvements.

Don’t forget to search for it first, just in case someone already suggested it, so that you don’t end up creating a duplicate.

Don’t forget to upvote the feature request so that it helps make support prioritise the feature first!

samliewrequest private consultation

Join the unofficial Make Discord server to chat with us!


Does this mean that once the Make module is updated, we will need to go in and manually change all the “Message an Assistant” modules in all our Make automations?

Also, it seems this is taking quite a while to be updated… should we expect to have to wait a week (weeks?) every time OpenAI updates their model before being able to use them in our Make automations?

OpenAI did not just update their model, but changed the way external servers connect and make requests to it via the API.

So, it takes times to update and test the new changes to the modules.


This needs adding asap - i get that it can take time but not this long and the demand is there - no-one wants to implement work arounds to make it happen - chop chop

Thanks. Will keep an eye on the thread.

Thanks for the heads up. Looking fwd to an update soon.

Hello everyone @here

I just want to confirm that this is unfortunately a known issue of the “4o” model. Our dev team is aware of this and is working on updating our ChatGPT module to the latest API version.

We will let you know once the update is rolled out.

Thank you very much for your patience and understanding. :pray:

As a temporary workaround, you could use an older assistant model or use the “Make an API Call” module with the custom API call to OpenAI API with the “OpenAI-Beta: assistants=v2” header.
The below guide might provide general help on how to use the “Make an API Call” modules.

:arrow_right: How to make an API call: tutorial


Hi everyone, we updated the Assistant Module inside makemarket to support both GPT-4o and functions. Check this post for more details: Open AI Assistant Module with GPT-4o and functions