Use case
GPT-5.4 Nano streaming
streaming notes for gpt-5.4-nano: 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 $0.090 on corouter (input $0.040, output $0.050).
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-nano is $0.250 per million tokens.
A sample of 1 million input tokens plus 200 thousand output tokens is about $0.090 on corouter (input $0.040, output $0.050).
A field you can set
A familiar chat-completions shape often sets "stream": true next to "model": "gpt-5.4-nano". On a messages shape, follow the stream field your client actually sends.
GPT-5.4 Nano is the lowest GPT-5.4 list rate, with a 400K window and vision. Send gpt-5.4-nano for high-volume chat and image passes.
Questions
- Which model ID should the request send?
- Send gpt-5.4-nano. 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.