DeepSeek
DeepSeek V3.1 Terminus (Thinking)
DeepSeek chat model for instruction following, coding, and analysis
Model facts
- Context window
- 128K tokens
- Maximum output
- 66K tokens
- Cheapest paid input
- $0.25 per 1M tokens
- Cheapest paid output
- $0.7 per 1M tokens
- Open weights
- yes
- Providers
- 2
Capabilities and modalities
reasoning, tool calling, structured output, temperature control, open weights, text.
Observed price history
- 2026-08-24: $0.25 input / $0.7 output per 1M tokens
API providers
- NanoGPT — model id deepseek-ai/DeepSeek-V3.1-Terminus:thinking; $0.25 input / $0.7 output per 1M tokens; provider documentation
- Qiniu — model id deepseek/deepseek-v3.1-terminus-thinking; not published input / not published output per 1M tokens; provider documentation