'Ultrafast' mode of GPT-6 Astra: up to 8x faster

OpenAI has added an Ultrafast mode to GPT-6 Astra, running on NVIDIA Blackwell GPUs. NVIDIA says it generates tokens up to 8x faster than the standard mode. It is available in the OpenAI API now and open to eligible ChatGPT Work and Codex users. Check OpenAI's pricing page before using it.

OpenAI · 1 October 2026

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