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OpenAI API: 2026-07-30 — Starting July 30, GPT-5.6 Luna costs 80% less, while GPT-5.6 Terra costs 20% less. See pricing details.

OpenAI API Changelog · article · Jul 30, 2026 · UTC

Starting July 30, GPT-5.6 Luna costs 80% less, while GPT-5.6 Terra costs 20% less. See pricing details. We're also introducing Fast mode in the API, which replaces our Priority Processing offering. For GPT-5.6 Sol, Fast mode now delivers up to 2.5× faster speeds than standard processing at twice the price. This change is backward compatible: requests tagged priority will automatically use Fast mode.

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recordType
page-entry
evidenceStatus
publisher-reported
region
Global

Evidence & attribution

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