# gpt-5-nano

Calls to the model gpt-5-nano on OpenAI stop working on December 11, 2026.

On December 11, 2026, calls to model gpt-5-nano will fail. OpenAI is shutting down both gpt-5-nano and gpt-5-nano-2025-08-07 on that day, and subsequent requests specifying these models will no longer receive responses.

## The error OpenAI returns once gpt-5-nano is gone

HTTP 404

```json
{"error":{"message":"The model `gpt-5-nano` has been deprecated, learn more here: https://platform.openai.com/docs/deprecations","type":"invalid_request_error","param":null,"code":"model_not_found"}}
```

## What to use instead

Move to gpt-5.6-luna, which is recommended by OpenAI as the replacement.

- API: OpenAI (api.openai.com)
- Model: gpt-5-nano
- Released: August 7, 2025 (models.dev)
- Kind: Model retirement
- Takes effect: December 11, 2026
- Calls after that day: fail
- Calls it hits: `model gpt-5-nano`
- Source: [Deprecations page](https://developers.openai.com/api/docs/deprecations)
- Verified: November 6, 2026, against OpenAI's own pages
- Page: https://www.okapi.bot/models/openai/gpt-5-nano/

## OpenAI's words

> Shutdown date: Dec 11, 2026; Model / system: gpt-5-nano | gpt-5-nano-2025-08-07; Recommended replacement: gpt-5.6-luna

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent