OpenAI o1-preview · deprecatedo1-preview

validasserted

Valid from: 2025-04-28
Valid until: still holds
Published: no source on record carries a date
Recorded by AsOf: 2026-11-04
Checked: 2026-11-04 · its source page states the value and the date
Confidence: 0.95

Sources

“2025-04-28: o1-preview and o1-mini On April 28th, 2025, we notified developers using o1-preview and o1-mini of their deprecations and removal from the API in three months and six months respectively.”— what the page says, read 2026-11-04

https://platform.openai.com/docs/deprecationsprimary · platform.openai.com

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