# deepseek-reasoner

Calls to the model deepseek-reasoner stopped working on July 24, 2026.

DeepSeek discontinued the legacy model deepseek-reasoner on July 24, 2026. Calls specifying model deepseek-reasoner fail since that date. The change was announced on April 24, 2026, stating that the model would be discontinued.

## What to use instead

Move to deepseek-flash. The model deepseek-v4-flash is answered by a newer model already.

- API: DeepSeek (api.deepseek.com)
- Model: deepseek-reasoner
- Released: December 1, 2025 (models.dev)
- Kind: Model retirement
- Announced: April 24, 2026
- Takes effect: July 24, 2026
- Calls after that day: fail
- Calls it hits: `model deepseek-reasoner`
- Source: [Announcement](https://api-docs.deepseek.com/updates/#date-2026-04-24)
- Verified: November 6, 2026, against DeepSeek's own pages
- Page: https://www.okapi.bot/models/deepseek/deepseek-reasoner/

## DeepSeek's words

> The two legacy API model names, deepseek-chat and deepseek-reasoner, will be discontinued in three months (2026-07-24).

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