Model Overview
DeepSeek · Active Model
- Long-Context
- API Available
- Production Ready
DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...
- Developer
- DeepSeek
- Release Date
- August 21, 2025
- Context Window
- 163,840 tokens≈ 218 words
- API Access
- Publicly AvailableIntegrate via official API
- Input Cost
- $0.21per million tokens
- Output Cost
- $0.79per million tokens