DeepSeek · Reasoning
deepseek-chat and deepseek-reasoner API names deprecation Deprecated
Scheduled for discontinuation 2026-07-24; meanwhile mapped to V4-Flash non-thinking and thinking modes
- Provider
- DeepSeek
- Family
- DeepSeek
- Model type
- Reasoning
- Official release date
- Apr 24, 2026
- Release type
- Deprecation
- Status
- Deprecated
- Previous version
- —
- Input
- text
- Output
- text
- Context window
- Not documented
- Max output
- Not documented
- API model id
deepseek-reasoner- API price (input)
- Not verified
- API price (output)
- Not verified
- Price notes
- —
- Consumer apps
- —
- Developer API
- —
- Free access
- None documented
- Paid access
- —
- Availability
- —
- Licence
- proprietary
Main improvements
- Scheduled for discontinuation 2026-07-24; meanwhile mapped to V4-Flash non-thinking and thinking modes
- No separate R-series model in 2026
Benchmarks
No benchmark results recorded. We only list scores with a source, benchmark version and date.
More from DeepSeek
- DeepSeek-V4.1-Flash Generally available · Sep 10, 2026
- DeepSeek-V4-Pro Generally available · Aug 13, 2026