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OpenAI API: 2026-08-05 — Fast mode now supports long-context requests for GPT-5.6 Sol, GPT-5.6 Terra, and GPT-5.6 Luna. As of today, long-context prompts exceeding 272K tokens can run in Fast mode, delivering speeds up to 2.5× faster than the Standard tier. See pri

OpenAI API Changelog · article · Aug 5, 2026 · UTC

Fast mode now supports long-context requests for GPT-5.6 Sol, GPT-5.6 Terra, and GPT-5.6 Luna. As of today, long-context prompts exceeding 272K tokens can run in Fast mode, delivering speeds up to 2.5× faster than the Standard tier. See pricing details.

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evidenceStatus
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region
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Evidence & attribution

First collected: 2026-09-22T22:51:10.705Z. This is not the publication date.