OpenAI launches Ultrafast mode with up to 8x Codex speed, plus new Pro 500 tier

xiaohu · x · 2026-09-30

OpenAI introduced an "Ultrafast" mode and a new Pro 500 subscription tier. Ultrafast delivers up to 8x generation speed in Codex (300 tokens per second) and up to 6x via the API. GPT-6 Astra Ultrafast is available today through the API and within ChatGPT Work and Codex for Pro 500 subscribers and enterprise plans.

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