OPENAI · MODEL
o1-preview was shut down on 28 July 2025
SHUT DOWN28 July 2025
SINCE446 days ago
REPLACE WITHo3
Announced in: 2025-04-28: o1-preview and o1-mini.
OpenAI lists 28 July 2025 as the date it shut down for o1-preview, with o3 as the recommended replacement. Source: OpenAI's official deprecations page, checked 17 October 2026. Read the official page.
Checked against the official page on 17 October 2026 at 06:08 UTC