DeepSeek V3.1 Terminus pricing
Source: openrouter · updated 2026-10-27
Short answer: DeepSeek V3.1 Terminus costs $0.270 per million input tokens and $1.00 per million output tokens. That is a 3:1 blended rate of $0.453 per million tokens, ranking it #291 of 704 tracked models by input price.
Price breakdown
| Metric | USD |
|---|---|
| Input, per 1M tokens | $0.270 |
| Output, per 1M tokens | $1.00 |
| Output รท input multiple | 3.70× |
| 3:1 blended, per 1M tokens | $0.453 |
| Context window | 163,840 tokens |
What a typical workload costs
| Monthly volume | Input cost | Output cost | Total | 1M in / 250K out | $0.270 | $0.250 | $0.520 |
|---|---|---|---|---|---|---|---|
| 10M in / 2.5M out | $2.70 | $2.50 | $5.20 | ||||
| 100M in / 25M out | $27.00 | $25.00 | $52.00 |
Other deepseek models
| Model | Input | Output |
|---|---|---|
| DeepSeek V4.1 Flash | $0.050 | $0.150 |
| DeepSeek V4 Flash 0731 | $0.119 | $0.238 |
| DeepSeek Coder | $0.140 | $0.280 |
| DeepSeek V4 Flash Vision Exp | $0.216 | $0.647 |
| DeepSeek Chat V3.1 | $0.250 | $0.950 |
Compare against
Cheaper alternatives
Next cheaper option: DeepSeek Chat at $0.257 per 1M input tokens. Next step up: GPT-5.4 Nano at $0.200 per 1M input tokens.