temperature is not supported with this model(o3-mini)

[gautamjajoo]

Confirm this is an issue with the Python library and not an underlying OpenAI API

• This is an issue with the Python library

Describe the bug

Temperature is not supported in the o3 model. Similar issue was reported earlier(#2072) and it was supposed to be fixed in the 1.61.1 release(#2078)

openai.BadRequestError: Error code: 400 - {'error': {'message': "Unsupported parameter: 'temperature' is not supported with this model.", 'type': 'invalid_request_error', 'param': 'temperature', 'code': 'unsupported_parameter'}}

To Reproduce

messages = [
    {"role": "system", "content": "You are an expert"},
    {"role": "user", "content": "What is the capital of France"}
]

client = OpenAI(api_key=api_key)

response = client.chat.completions.create(
    model="o3-mini",
    messages=messages,
    temperature=0
)

print(response.choices[0].message.content)

Using this code, the above error pops up.

Code snippets

OS

macOS

Python version

Python 3.13.1

Library version

openai 1.61.1

[RobertCraigie]

#2072 was just about the CLI sending it when the user doesn't specify the temperature flag, in your snippet you're using the client API where if you specify temperature we're going to send it. If you're using a model that doesn't support temperature you shouldn't specify it.

[David2020-udec]

Good afternoon

Has the error finally been corrected??

5 days ago the error continued to persist, even if the variable is not specified it is passed underneath, the only way to find out is to print it when executing the model.

`
"openai": ChatOpenAI(
model="o3-mini-2025-01-31",
model_kwargs={"reasoning_effort": "high"},
api_key=environ.get("OPENAI_API_KEY")
),

print("=== MODEL CONFIGURATION o3 ===")
print(CHAT_MODELS["openai"].dict()) # Check that 'temperature' is no longer present
print("===================================================")`

[RobertCraigie]

That interface does not come from this SDK please report this to the library you're using.