OpenAI Ultrafast mode now available on AI Gateway
AI Gateway now supports OpenAI's Ultrafast service tier for GPT-6 Astra, enabling faster output for interactive applications and rapid coding iterations. Ultrafast can be requested via AI SDK, Chat Completions API, or Responses API, with pricing at 6× the standard per-token rate.
now supports OpenAI's Ultrafast service tier for GPT-6 Astra, providing faster output for interactive applications and rapid coding iterations.AI Gateway
To use Ultrafast, request it for through AI SDK, the Chat Completions API, or Responses API:openai/gpt-6-astra
For workflows with frequent tool calls, OpenAI recommends the Responses API over a persistent WebSocket connection to reduce overhead between turns. See the for persistent connections, including AI SDK over WebSocket.Ultrafast service-tier examples
Ultrafast supports US and global processing. Requests pinned to unsupported regions, such as the EU, run at the standard () tier. Standard processing remains the default when no service tier is specified.default
Requests served at Ultrafast are billed at 6× the standard per-token rate, while requests that fall back to another tier are billed at the rate for the tier actually served. Check the for current rates.GPT-6 Astra model page
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