gpt-4.1-nano
For gpt-4.1-nano, provider is OpenAI; lifecycle status is Deprecated; deprecation announced is April 22, 2026; shutdown / retirement date is October 23, 2026; recommended replacement is gpt-5.6-luna, recorded from its source on 2026-08-12.
- Provider
- OpenAI verified
- Model ID / API name
- gpt-4.1-nano verified
- Lifecycle status
- Deprecated verified
- Deprecation announced
- April 22, 2026
- Shutdown / retirement date
- October 23, 2026 verified
- Recommended replacement
- gpt-5.6-luna verified
- Human-readable model name
- gpt-4.1-nano per learn.microsoft.com
- Platform / deployment scope
- Azure / Microsoft Foundry per learn.microsoft.com
What the source says
Inference on fine-tuned models will be disabled only when the underlying base model is deprecated. | 2026-04-22: Legacy GPT model snapshots To improve reliability and make it easier for developers to choose the right models, we are deprecating a set of older OpenAI models. Access to these models will be shut down on the dates below. Shutdown date | Model snapshot | Substitute model | October 23, 2026 | gpt-3.5-turbo-0125 | gpt-3.5-turbo , gpt-3.5-turbo-completions | gpt-5.6-terra | October 23, 2026 | gpt-4-0613 | gpt-4 , gpt-4-0613-completions , gpt-4-completions | gpt-5.6-sol | October 23, 2026 | gpt-4-1106-preview | gpt-5.6-sol | October 23, 2026 | gpt-4-turbo | gpt-4-turbo-2024-04-09 , gpt-4-turbo-completions | gpt-5.6-sol | October 23, 2026 | gpt-4.1-nano | gpt-4.1-nano-2025-04-14 | gpt-5.6-luna |
— platform.openai.com, retrieved 2026-08-12
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Provider
platform.openai.com says provider is OpenAI, as of 2026-08-12.
Inference on fine-tuned models will be disabled only when the underlying base model is deprecated. | 2026-04-22: Legacy GPT model snapshots To improve reliability and make it easier for developers to choose the right models, we are deprecating a set of older OpenAI models. Access to these models will be shut down on the dates below. Shutdown date | Model snapshot | Substitute model | October 23, 2026 | gpt-3.5-turbo-0125 | gpt-3.5-turbo , gpt-3.5-turbo-completions | gpt-5.6-terra | October 23, 2026 | gpt-4-0613 | gpt-4 , gpt-4-0613-completions , gpt-4-completions | gpt-5.6-sol | October 23, 2026 | gpt-4-1106-preview | gpt-5.6-sol | October 23, 2026 | gpt-4-turbo | gpt-4-turbo-2024-04-09 , gpt-4-turbo-completions | gpt-5.6-sol | October 23, 2026 | gpt-4.1-nano | gpt-4.1-nano-2025-04-14 | gpt-5.6-luna |
https://platform.openai.com/docs/deprecations
learn.microsoft.com says provider is Microsoft Azure / Foundry, as of 2026-08-12.
gpt-4.1-nano | 2025-04-14 | Deprecated | 2026-10-14 |
https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
Shutdown / retirement date
platform.openai.com says shutdown / retirement date is October 23, 2026, as of 2026-08-12.
Inference on fine-tuned models will be disabled only when the underlying base model is deprecated. | 2026-04-22: Legacy GPT model snapshots To improve reliability and make it easier for developers to choose the right models, we are deprecating a set of older OpenAI models. Access to these models will be shut down on the dates below. Shutdown date | Model snapshot | Substitute model | October 23, 2026 | gpt-3.5-turbo-0125 | gpt-3.5-turbo , gpt-3.5-turbo-completions | gpt-5.6-terra | October 23, 2026 | gpt-4-0613 | gpt-4 , gpt-4-0613-completions , gpt-4-completions | gpt-5.6-sol | October 23, 2026 | gpt-4-1106-preview | gpt-5.6-sol | October 23, 2026 | gpt-4-turbo | gpt-4-turbo-2024-04-09 , gpt-4-turbo-completions | gpt-5.6-sol | October 23, 2026 | gpt-4.1-nano | gpt-4.1-nano-2025-04-14 | gpt-5.6-luna |
https://platform.openai.com/docs/deprecations
learn.microsoft.com says shutdown / retirement date is 2026-10-14, as of 2026-08-12.
gpt-4.1-nano | 2025-04-14 | Deprecated | 2026-10-14 |
https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
Sources
- platform.openai.comhttps://platform.openai.com/docs/deprecations
- learn.microsoft.comhttps://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule