[Mistral](/ai-gateway/models/labs/mistral)

# Magistral Small 2509

Magistral Small 2509 is a 24B open-source reasoning model under Apache 2.0 with 70.7% on AIME 2024. It's Mistral's compact reasoning option in the Magistral family. Your use is subject to Mistral's [Terms](https://mistral.ai/terms) & [Privacy](https://mistral.ai/terms#privacy-policy) Policies.

ReasoningTool UseVision (Image)

[Use with AI Gateway](https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Futm_source%3Dgateway-model-page%26utm_campaign%3Dai-gateway-models&title=Get+Started+with+Vercel+AI+Gateway) [View docs](https://vercel.com/docs/ai-gateway)

AI SDKChat CompletionsMessagesResponses

```
1import { streamText } from 'ai'
2

3const result = streamText({
4  model: 'mistral/magistral-small',
5  prompt: 'Why is the sky blue?'
6})
```

[Read docs](https://vercel.com/docs/ai-gateway/sdks-and-apis/ai-sdk)

[Overview](/ai-gateway/models/magistral-small) [API](/ai-gateway/models/magistral-small/api) [About](/ai-gateway/models/magistral-small/about) [Providers](/ai-gateway/models/magistral-small/providers) [Uptime](/ai-gateway/models/magistral-small/uptime) [Status](/ai-gateway/models/magistral-small/status) [Similar](/ai-gateway/models/magistral-small/similar) [FAQ](/ai-gateway/models/magistral-small/faq)

## [Copy link to heading](#frequently-asked-questions)Frequently Asked Questions

- What are Magistral Small 2509's AIME benchmark scores?

    70.7% on AIME 2024 and 83.3% with majority voting.

- What is the parameter count and license?

    24B parameters under Apache 2.0, available for download from Hugging Face.

- Does Magistral Small 2509 produce chain-of-thought reasoning?

    Yes. Like Magistral Medium, Magistral Small 2509 exposes step-by-step reasoning traces for each response.

- Which languages does Magistral Small 2509 reason in?

    English, French, Spanish, German, Italian, Arabic, Russian, and Simplified Chinese, the same set as Magistral Medium.

- How does Magistral Small 2509 compare to Magistral Medium?

    Magistral Small 2509 is 24B parameters and open-source. Magistral Medium is the larger, API-first release. On AIME 2024, Small is 70.7% single-sample versus Medium at 73.6%; the gap is most visible on heavy math, less on typical business prompts.

- Is Magistral Small 2509 available via API?

    Yes. You can access Magistral Small 2509 through AI Gateway.