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Model details
DeepSeek Reasoner
Find out what this model does, when it was released, and which provider serves it.
DeepSeekdeepseek-reasonerdeepseek-thinking
Quick Info
- Provider
- DeepSeek
- Model key
- deepseek-reasoner
- Release date
- Dec 1, 2025
- Last updated
- Feb 28, 2026
- Knowledge
- 2025-09
- Input modalities
- text
- Output modalities
- text
- Capabilities
- Reasoning, Tool calling, Attachments, Open weights, Temp controls
- Cost summary
- In $0.28 · Out $0.42
- Limit summary
- 128,000 token context window
Cost
- Input token cost
- $0.28
- Output token cost
- $0.42
Limits
- Output tokens
- 64,000 tokens
- Context window
- 128,000 tokens