SF·SIX / MODEL PROFILE
DeepSeek V3.1
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...
DeepSeek V3.1 costs $0.25 per 1M input tokens and $0.95 per 1M output tokens at the standard tier, the lowest default-region price among the 4 providers SF·SIX tracks, from DeepInfra (fp4). Cached input reads cost $0.13 per 1M tokens. Updated ; prices checked .
- Developer
- DeepSeek
- Input modalities
- text
- Output modalities
- text
- Context tokens
- 163,840
- Latest price observation
- 2026-10-17
- Lowest paired standard token quote
- $0.25 input / $0.95 output per 1M tokens
Dated price and provider records
| Provider and channel | Input | Output or native rate | Unit and status | Source and observation |
|---|---|---|---|---|
| DeepInfraOpenRouter | $0.25 | $0.95 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
| SiliconFlowOpenRouter | $0.27 | $1.00 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
| CoreWeaveOpenRouter | $0.55 | $1.65 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
| MaraOpenRouter | $0.60 | $1.70 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
These are dated, non-executable observations. Verify the exact endpoint, price and terms with the source before use. Unknown values are not free.