OpenAI · API availability
GPT-6 Astra Ultrafast added to the API
A faster service tier for GPT-6 Astra: up to 6x faster generation in the API and up to 8x in Codex. In ChatGPT it is limited to Pro 500 and Enterprise.
- Occurrence
- Occurrence date basis
- Provider publication date
- Status recorded with this event
- available
- Event checked
Original sources
- Changelog | OpenAI API (opens in a new tab) ↗
First-party source · Source checked
Sep 29 Feature gpt-6-astra v1/responses Added Ultrafast mode for GPT-6 Astra in the Responses API.
- DevDay 2026 Recap (opens in a new tab) ↗
First-party source · Source checked
Ultrafast offers up to 8x faster token generation (300 tokens per second) in Codex and up to 6x in the API.
Recording provenance
First recorded by StackReplay . This is a discovery date, not the occurrence date.
Event ID: gpt-6-astra-ultrafast