# clm_F18414B1E10E

subject: OpenAI o1-mini (/record/openai-o1-mini.md)  
predicate: deprecated  
value: o1-mini  
valid_from: 2025-04-28  
valid_to: null  
published: no source on record carries a date  
recorded: 2026-11-04  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
checked: 2026-11-04 · its source page states the value and the date  

> 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 https://platform.openai.com/docs/deprecations says, word for word.

## Sources

- https://platform.openai.com/docs/deprecations (primary, OpenAI (API deprecations))

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