# AI model deprecation & migration calendar
Updated July 23, 2026. Verified from official provider docs — nothing estimated.

## Upcoming retirements
| Provider | Model | Retires | Migrate to | Source |
| --- | --- | --- | --- | --- |
| anthropic | claude-opus-4-1-20250805 | 2026-08-05 | claude-opus-4-8 | https://platform.claude.com/docs/en/docs/about-claude/model-deprecations |
| openai | gpt-4o (2024-11-20) | 2026-10-01 | gpt-5.1 | https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/model-retirements |
| openai | gpt-4-turbo | 2026-10-23 | gpt-5.6-sol | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-4-0613 | 2026-10-23 | gpt-5.6-sol | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-3.5-turbo-0125 | 2026-10-23 | gpt-5.6-terra | https://developers.openai.com/api/docs/deprecations |
| openai | o1-2024-12-17 | 2026-10-23 | gpt-5.6-sol | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-5-2025-08-07 | 2026-12-11 | gpt-5.6-sol | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-5-mini-2025-08-07 | 2026-12-11 | gpt-5.6-terra | https://developers.openai.com/api/docs/deprecations |
| openai | o3-2025-04-16 | 2026-12-11 | gpt-5.6-sol | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-realtime | 2027-01-20 | gpt-realtime-2.1 | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-audio | 2027-01-20 | gpt-audio-1.5 | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-4o-realtime | 2027-01-20 | gpt-realtime-2.1 | https://developers.openai.com/api/docs/deprecations |
| openai | gpt-4o-audio | 2027-01-20 | gpt-audio-1.5 | https://developers.openai.com/api/docs/deprecations |


## Recently retired
| Provider | Model | Retires | Migrate to | Source |
| --- | --- | --- | --- | --- |
| anthropic | claude-opus-4-20250514 | 2026-06-15 | claude-opus-4-8 | https://platform.claude.com/docs/en/docs/about-claude/model-deprecations |
| anthropic | claude-sonnet-4-20250514 | 2026-06-15 | claude-sonnet-4-6 | https://platform.claude.com/docs/en/docs/about-claude/model-deprecations |
| openai | dall-e-2 / dall-e-3 | 2026-05-12 | gpt-image-2 | https://developers.openai.com/api/docs/deprecations |
| anthropic | claude-3-haiku-20240307 | 2026-04-20 | claude-haiku-4-5-20251001 | https://platform.claude.com/docs/en/docs/about-claude/model-deprecations |
| openai | gpt-4o (2024-05-13, 2024-08-06) | 2026-03-31 | gpt-5.1 | https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/model-retirements |
| anthropic | claude-3-7-sonnet-20250219 | 2026-02-19 | claude-sonnet-4-6 | https://platform.claude.com/docs/en/docs/about-claude/model-deprecations |


Source: https://llmlatency.dev/deprecations