# o3 — AI model deprecation and retirement dates by provider

For o3, provider is Microsoft Azure / Foundry; lifecycle status is GA; shutdown / retirement date is 2026-10-21; recommended replacement is gpt-5.6-sol; platform / deployment scope is Azure / Microsoft Foundry, recorded from its source on 2026-08-12.

- **Provider:** Microsoft Azure / Foundry
- **Model ID / API name:** o3 _(verified: appears in the quote below)_
- **Human-readable model name:** o3 _(verified: appears in the quote below)_
- **Lifecycle status:** GA _(verified: appears in the quote below)_
- **Shutdown / retirement date:** 2026-10-21 _(verified: appears in the quote below)_
- **Recommended replacement:** gpt-5.6-sol _(verified: appears in the quote below)_
- **Platform / deployment scope:** Azure / Microsoft Foundry _(our reading, not quoted from the source)_

## What the source says

> gpt-5.6-sol | o3 | 2025-04-16 | GA | 2026-10-21 |

## Source

- https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule

Last verified: 2026-08-12. Review by: 2026-09-11.
Part of [AI model deprecation and retirement dates by provider](https://referencesource.org/ai-model-deprecation-and-retirement/).