OpenAI o1-preview and o1-mini Models

API Metadata

Provider	OpenAI
Status	sunset
Deprecated announced	2025-04-28
End-of-life date	2025-07-28 0
Sources	Changelog: OpenAI API Deprecations

OpenAI announced the deprecation of o1-preview and o1-mini models. The o1-preview model shutdown is scheduled for July 28, 2025, while o1-mini will be shut down on October 27, 2025.

Recommended replacements are o3 for o1-preview and o4-mini for o1-mini.