Using models o1 and o3-mini got the exception: "Unsupported parameter: 'temperature' is not supported with this model."

[JorisBeen]

Hi,
I am trying to use the o1 and o3-mini models through the api. Creating the assistant with these models got succesfully.
In the the assistant response i can see that by default the temperature value has been set to 1 (i havent send any value when creating the assistant). so this seem to be working fine.

But when i try to relate filed to the assistant of these models i got the exception:

ModifyAssistantAsync Failed! HTTP status code: BadRequest | Response body: {
  "error": {
    "message": "Unsupported parameter: 'temperature' is not supported with this model.",
    "type": "invalid_request_error",
    "param": "model",
    "code": "unsupported_model"
  }
}

I am getting first the assistant and then try to modify it using the modify assistant method. I have tried a lot but i am not able to get rid of this exception. When i retrieve the assistant i still see the temperature value is 1. When use the modify endpoint i have tried to set it to null in the request but this does not work either.

Also having the same issue when trying to create a thread on the assistant of these models.

Please help me how to deal with this, or it seems to be a bug?

Kind regards,
Joris

[StephenHodgson]

Hi Joris, can you also provide a snippet of the c# request you used to make the request?

I'll look into this and make sure the property isn't used for requests of these models, with unit tests.

Thanks for reporting.

[StephenHodgson]

@JorisBeen I checked the model cards and they say that it should be available, so I'll keep digging into this.

• https://platform.openai.com/docs/models/o1
• https://platform.openai.com/docs/models/o1-mini
• https://platform.openai.com/docs/models/o3-mini

[StephenHodgson]

btw I tested this with Chat endpoint, and it seems to be fine

[JorisBeen]

The models that are available are o1 and o3-mini (not o1-mini)
Depends also sometimes on the account you have on openai. I got an email yesterday that those models are now available for us through the api.

[StephenHodgson]

Ok, I found the source of the problem. Will def be fixed in next patch release in a few hours.

• OpenAI-DotNet 8.6.2 #432

[JorisBeen]

Ok great, thanks for your quick response and fixing the issue!

[JorisBeen]

@StephenHodgson When is the 8.6.2 planned to be released?

[StephenHodgson]

just now

[JorisBeen]

great i see!
And it is working now :)