This is Ultrafast. Our premium speed tier, Ultrafast offers up to 8x faster token generation (300 tokens per second) in Codex and up to 6x in the API.
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Ultrafast is available today for GPT-6 Astra in Codex, ChatGPT Work, and the API, with GPT-6.1 Sol coming soon. To access it in Codex and ChatGPT Work, we’re introducing Pro 500—a new plan with our highest usage limits (25x Plus) and access to Ultrafast. chatgpt.com/pricing
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Replying to @OpenAI
Math is not mathing. Right now on 20x Plan Astra on High is barely 2 days of work. $500 plan is 25x usage so let's say that's 2 days and a half. Or 60 hrs so yea ultrafast with 6x mutliplier = 10hrs of usage for $500 or 600 Euro including VAT. Are we serious ?

Sep 29, 2026 · 6:02 PM UTC

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Replying to @procaclaw @OpenAI
They announced making the 20x plan a 10x plan late last night :)
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