# Mistral Small API — pricing & specs

Mistral Small is a text model from Mistral AI. On KeepRouter, Mistral Small costs $0.1500 per 1M input tokens and $0.6000 per 1M output tokens, billed pay-as-you-go with no monthly fee; actual request cost depends on measured usage. Call it through a compatible KeepRouter endpoint supported by its active route, with the model id `mistral-small-latest`.

| Spec | Value |
|---|---|
| Maker | Mistral AI |
| Modality | Text |
| Input price | $0.1500 per 1M tokens |
| Output price | $0.6000 per 1M tokens |
| Cached input | $0.0150 per 1M tokens |
| Capabilities | Chat completions, Streaming where supported, Tool calling where supported |
| Endpoint | POST /v1/chat/completions or POST /v1/messages (compatible chat routes) |
| Model id | `mistral-small-latest` |

## Call it via the compatible chat endpoint

Use POST /v1/chat/completions or, on compatible chat routes, POST /v1/messages; streaming and tool support depend on the model's active route.

### cURL

```bash
curl https://keeprouter.com/v1/chat/completions \
  -H "Authorization: Bearer $KEEPROUTER_KEY" -H "Content-Type: application/json" \
  -d '{"model":"mistral-small-latest","messages":[{"role":"user","content":"Hello"}]}'
```

### Python

```python
from openai import OpenAI
client = OpenAI(base_url="https://keeprouter.com/v1", api_key="$KEEPROUTER_KEY")
r = client.chat.completions.create(model="mistral-small-latest", messages=[{"role":"user","content":"Hello"}])
```

### JavaScript

```js
import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://keeprouter.com/v1", apiKey: process.env.KEEPROUTER_KEY });
const r = await client.chat.completions.create({ model: "mistral-small-latest", messages: [{ role: "user", content: "Hello" }] });
```

## Source and verification boundary

[Official Mistral AI website](https://mistral.ai/). KeepRouter's live catalog is authoritative for the customer price and enabled endpoint shown here; the maker remains authoritative for upstream model capabilities and limits.

## Guides

- [Call Mistral Small with the OpenAI SDK](https://keeprouter.com/use-cases/openai-sdk.md)
- [Use Mistral Small in Claude Code](https://keeprouter.com/use-cases/claude-code.md)

## Related models

- [Mistral NeMo](https://keeprouter.com/models/open-mistral-nemo.md) by Mistral AI — $0.0200 per 1M input tokens and $0.0300 per 1M output tokens
- [Mistral Medium](https://keeprouter.com/models/mistral-medium-latest.md) by Mistral AI — $1.50 per 1M input tokens and $7.50 per 1M output tokens
- [Codestral](https://keeprouter.com/models/codestral-latest.md) by Mistral AI — $0.3000 per 1M input tokens and $0.9000 per 1M output tokens
- [Mistral Large](https://keeprouter.com/models/mistral-large-latest.md) by Mistral AI — $0.5000 per 1M input tokens and $1.50 per 1M output tokens
- [Devstral Medium](https://keeprouter.com/models/devstral-medium-latest.md) by Mistral AI — $0.4000 per 1M input tokens and $2.00 per 1M output tokens
- [Ministral 8B](https://keeprouter.com/models/ministral-8b-latest.md) by Mistral AI — $0.1500 per 1M input tokens and $0.1500 per 1M output tokens

## More

- [All models & pricing](https://keeprouter.com/models.md)
- [Quickstart](https://keeprouter.com/docs/quickstart.md)
- [Get an API key](https://keeprouter.com/login?returnTo=%2Fconsole%2Fkeys%3Fmodel%3Dmistral-small-latest)

_Catalog facts and prices last changed 2026-08-01._