How to customize the header？

[tydanta]

Confirm this is a feature request for the Python library and not the underlying OpenAI API.

• This is a feature request for the Python library

Describe the feature or improvement you're requesting

How to customize the header, my model provider needs additional header authentication, I set the header according to the example in the official documentation, but it doesn't work, I use postman is fine, how should I modify it,

Additional context

No response

[RobertCraigie]

you can pass default_headers when you instantiate the client,

client = OpenAI(default_headers={'name': 'value'})

[tydanta]

[tydanta]

您可以在实例化客户端时传递default_headers

client = OpenAI(default_headers={'name': 'value'})

openai.InternalServerError: Error code: 500 - {'timestamp': '2025-08-08T06:43:31.781+00:00', 'status': 500, 'error': 'Internal Server Error', 'path': '/aiopen/stream/jx_deepseek_r1_openai/chat/completions'} I found that this routing address is spliced with "chat/completions" at the end, how can I not splice it?