Use case
GPT-5.4 Pro streaming
streaming notes for gpt-5.4-pro: the rate card, a worked volume, and when to send this ID. A sample of 1 million input tokens plus 200 thousand output tokens is about $13.20 on corouter (input $6.00, output $7.20).
How streaming is billed
A streamed response is still billed on input and output tokens, not on how long the socket stays open. Output for gpt-5.4-pro is $36.00 per million tokens.
A sample of 1 million input tokens plus 200 thousand output tokens is about $13.20 on corouter (input $6.00, output $7.20).
A field you can set
A familiar chat-completions shape often sets "stream": true next to "model": "gpt-5.4-pro". On a messages shape, follow the stream field your client actually sends.
GPT-5.4 Pro is the outlier on the rate card: its list output rate is far above GPT-5.4. Send gpt-5.4-pro only when you have already chosen that ID on purpose.
Questions
- Which model ID should the request send?
- Send gpt-5.4-pro. Do not put a different name in the model field.
- What is the minimum top-up?
- Prepaid credits, $5 minimum top-up, no subscription tier.