DeepSeek · Model retirement
deepseek-reasoner
Stopped working
Calls to the model deepseek-reasoner on DeepSeek stopped working on July 24, 2026.
What to use instead of deepseek-reasoner
deepseek-v4-flash, named first, is answered by a newer model already. deepseek-reasoner, named first, stopped working on 2026-07-24. No replacement that holds is named yet.
Facts
- API
- DeepSeek
api.deepseek.com - Model
deepseek-reasoner- Kind
- Model retirement
- Announced
- April 24, 2026
- Takes effect
- July 24, 2026
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
More from DeepSeek
- deepseek-chat Stopped working
- deepseek-v4-flash Deprecated, no date
- deepseek-v4-flash-vision-exp Deprecated, no date