OpenAI Set to Expand Ultrafast API Ahead of DevDay

OpenAI has quietly added an "ultrafast" service tier to its API docs and is reportedly set to expand the Ultrafast API, with speeds up to 750 tokens/second, around its September 29 DevDay.

2026-09-26 ~ 2026-09-26 · 3 related posts

• OpenAI quietly adds 'ultrafast' service tier to agent API docs — imjustnewatai · 2026-09-26
• OpenAI prepares broader rollout of Ultrafast API offering up to 750 tokens/sec — testingcatalog · 2026-09-26
• OpenAI set to open Ultrafast API to more users, real-time computer use in sight — Angaisb_ · 2026-09-26