Text models with a published API shutdown date at OpenAI and Anthropic, read from the vendors' own deprecation pages on November 13, 2026. Subscribe in your calendar (.ics).
| Model and API IDs | Switched off | Replacement the vendor lists | |
|---|---|---|---|
| Claude Sonnet 4.5 claude-sonnet-4-5-20250929 | November 30, 2026 | claude-sonnet-5-5 | Test it |
| GPT-5 gpt-5, gpt-5-2025-08-07 | December 11, 2026 | gpt-6.1-sol | Test it |
| GPT-5 mini gpt-5-mini, gpt-5-mini-2025-08-07 | December 11, 2026 | gpt-6.1-terra | Test it |
| GPT-5 nano gpt-5-nano, gpt-5-nano-2025-08-07 | December 11, 2026 | gpt-6-luna | Test it |
| GPT-5 pro gpt-5-pro, gpt-5-pro-2025-10-06 | December 11, 2026 | gpt-6.1-sol | Test it |
| o3 o3, o3-2025-04-16 | December 11, 2026 | gpt-6.1-sol | Test it |
| o3-pro o3-pro, o3-pro-2025-06-10 | December 11, 2026 | gpt-6.1-sol | Test it |
| GPT-4o gpt-4o-2024-08-06, gpt-4o-2024-11-20 | January 14, 2027 | gpt-6-luna | Test it |
| GPT-4o mini gpt-4o-mini-2024-07-18 | January 14, 2027 | gpt-6-luna | Test it |
| GPT-4.1 gpt-4.1-2025-04-14 | January 14, 2027 | gpt-6-luna | Test it |
| GPT-4.1 mini gpt-4.1-mini-2025-04-14 | January 14, 2027 | gpt-6-luna | Test it |
Sources: OpenAI deprecations, Anthropic model deprecations. Vendors change these pages. Check them before you plan around a date.