GPT-6 Astra gets an Ultrafast API tier 🚀

OpenAI added an Ultrafast speed tier for GPT-6 Astra in Codex and the API.

The important bit is real-time work. Astra can now run Responses API workflows over WebSockets, which is a much better fit for interactive coding assistants, live agent status, and UI flows where waiting on a full request feels bad.

What to check:

• Responses API: use it for the agent loop and tool calls.
• WebSockets: keep one live connection instead of polling.
• Ultrafast tier: test it where latency matters more than squeezing every last token of quality.

If your app streams agent work to a browser, this is worth benchmarking against your current model setup.

[ Article ] :
https://community.openai.com/t/build-ultrafast-with-astra-in-codex-and-the-api/1402393

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