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DeepSeek V3.1 Terminus: price, performance and context
Open DeepSeek V3.1 Terminus by DeepSeek costs $0.27 per 1M input and $1.00 per 1M output tokens, handles up to 163.8K tokens in one request (≈ 490 pages of text) and scores 14.8 points on the AgentKernel performance index, rank 119 of 212.
Privacy: zero data retention with one provider, not in the EU. Availability over the last 24 h: 99.6%.
Open in the interactive comparisonKey facts
- Licence
- Open weights: free to download and self-host
- Input / 1M tokens
- $0.27
- Output / 1M tokens
- $1.00
- Context window
- 163.8K tokens
- Max. output
- 147.5K tokens
- Performance index
- 14.8 points · rank 119 of 212
- Coding index
- 43.5 points · rank 68 of 119
- Agentic index
- 6.8 points · rank 60 of 91
- Cost at your usage
- $0.52 / month
- Knowledge cutoff
- Mar 2025
- In the catalog since
- Sep 22, 2025
- Capabilities
- Reasoning, Tool Calling
What do you get for $10.00?
Rules of thumb from the cost calculator, base rates without caching or taxes.
| Task | Cost per task | For $10.00 |
|---|---|---|
| Chat repliesA question with a short history, a detailed answer | $0.001 | 17,000 |
| Email draftsBullet points in, a finished email out | $0.00 | 21,000 |
| Document summariesRead 10 pages, write a one-page summary | $0.001 | 7,200 |
| Code reviewsReview and comment on 500 lines of code | $0.002 | 4,000 |
| Book analysesAnalyse a 300-page book in one go | $0.029 | 340 |
Cheaper with similar performance
| Model | Licence | Performance | Your cost / month |
|---|---|---|---|
| Ling 3.1 FlashinclusionAI | Proprietary | 41.1 | $0.00 |
| Ling 3.0 Flash VLinclusionAI | Open | 24.6 | $0.036 |
| Ling 3.0 FlashinclusionAI | Open | 20.1 | $0.037 |
Stronger models
| Model | Licence | Performance | Your cost / month |
|---|---|---|---|
| GLM 4.7 FlashZ.ai | Open | 14.9 | $0.161 |
| o1OpenAI | Proprietary | 15.2 | $30.00 |
| Kimi K2 0905Moonshot AI | Open | 15.3 | $1.225 |