# o1-preview — Superseded and deprecated identifier mappings

For o1-preview, status is Deprecated; successor is o3; shutdown date is 2025-07-28, recorded from its source on 2026-08-04.

- **Identifier:** o1-preview
- **Status:** Deprecated _(unconfirmed — we could not tie this to the quote below)_
- **Successor:** o3
- **Shutdown date:** 2025-07-28

## What the source says

> 2025-07-28 | o1-preview | o3 |

## Source

- https://developers.openai.com/api/docs/deprecations

Last verified: 2026-08-04. Review by: 2027-01-31.
Part of [Superseded and deprecated identifier mappings](https://referencesource.org/superseded-standards-mappings/).