Mistral Small 4 API price, and what each result really costs
Mistral, listed 16 Mar 2026. Price checked 12 Nov 2026; unchanged since we started tracking it. Source: OpenRouter. mistralai/mistral-small-4
List price per million tokens
- Input
- $0.15
- Cached input
- $0.015
- Output
- $0.60
- Context window
- 262K tokens
Note: Mistral's own endpoint on OpenRouter.
What it costs per task, and per task that works
Six common task shapes with typical token counts. The real cost counts the tries that get redone; the rates are examples, not measurements.
| Task | Per 1,000 tries | Per 1,000 that work, 8 in 10 | Per 1,000 that work, 6 in 10 | Per 1,000 that work, 4 in 10 |
|---|---|---|---|---|
| Support bot answer3,000 in / 300 out | $0.63 | $0.79 | $1.05 | $1.58 |
| Invoice field extraction2,500 in / 250 out | $0.53 | $0.66 | $0.88 | $1.31 |
| Lead scoring1,200 in / 100 out | $0.24 | $0.30 | $0.40 | $0.60 |
| Email reply draft1,500 in / 400 out | $0.47 | $0.58 | $0.78 | $1.16 |
| Translation900 in / 800 out | $0.61 | $0.77 | $1.03 | $1.54 |
| Search re-ranking4,000 in / 50 out | $0.63 | $0.79 | $1.05 | $1.58 |
Work out your own real cost per resultTest Mistral Small 4 on your own prompt
Compare Mistral Small 4 with
- Mistral Large 4$0.70 in / $2.10 outSwitch cost
- Mistral Medium 3.5$1.50 in / $7.50 outSwitch cost
- GPT-4o mini$0.15 in / $0.60 outSwitch cost
- gpt-oss-120b$0.15 in / $0.60 outSwitch cost
- MiniMax M3.1 Flash$0.15 in / $0.60 outSwitch cost
Questions
How much does the Mistral Small 4 API cost?
$0.15 per million input tokens and $0.60 per million output tokens, or $0.015 per million for cached input. Price checked 12 Nov 2026; unchanged since we started tracking it.
What does a result that works really cost with Mistral Small 4?
A support bot answer (about 3,000 tokens in, 300 out) costs $0.00063 per try. If 6 in 10 work first time, each answer that works really costs $0.0011, because the redone ones were paid for too.