Mistral Small

Mistral Small v24.09 (API name mistral-small-2409, listed by Mistral as Small 2.0) is a mid-tier model from Mistral AI. The open weights on Hugging Face, Mistral-Small-Instruct-2409, have 22B parameters, a 32k sequence length, function-calling support, and an MRL license tag. On the API, Mistral's models overview shows it as deprecated on November 6, 2025 and retired on November 30, 2025, with Mistral Small 4 as the recommended alternative.

Key features

• 22B parameters, 32k context: from the Hugging Face card.
• Function calling: the card includes a function-calling example with a tool definition.
• Multilingual tag: the card tags the model with 10 languages but does not list them.
• License: the card shows the MRL license tag and does not explain the terms, so read it before commercial use.
• Lifecycle: mistral-small-2409 is the Small 2.0 line; the same overview lists Small 3.0, 3.1 and 3.2 and the current Small 4 (26.03), described as a hybrid model unifying instruct, reasoning and coding under Apache 2.0.

Use cases

• Maintaining or auditing code that still references mistral-small-2409.
• Self-hosting the 22B open weights for research under the MRL terms.
• Planning a move to Mistral Small 4 and re-running your own evals.

Pricing and availability

Status: deprecated November 6, 2025 and retired November 30, 2025 on the Mistral API, per the models overview, checked on 2026-10-29. The same table shows earlier and later Small versions as deprecated too: Small 3.2 (mistral-small-2506) was deprecated April 30, 2026 and retired July 31, 2026, and Small 3.1 and 3.0 were retired November 30, 2025. The page lists no price for this model. The open weights on Hugging Face remain downloadable.

Getting started

1. Search your code for mistral-small-2409 and any other mistral-small-* ids.
2. Check the models overview for the current Small 4 id and its documentation.
3. Re-test prompts and function-calling schemas on the new model before switching production traffic.
4. If you only need the weights, download Mistral-Small-Instruct-2409 from Hugging Face and review the license.

FAQ

Is Mistral Small v24.09 still available?

Not on the Mistral API. mistral-small-2409 was deprecated November 6, 2025 and retired November 30, 2025. The open weights remain on Hugging Face.

What replaced it?

Mistral lists Mistral Small 4 (26.03) as the alternative.

How big is it and what is its context?

22B parameters and a 32k sequence length, per the Hugging Face card.

Does it support function calling?

Yes, the card includes a function-calling example.

Where do I find a larger Mistral model?

See Mistral Large 4.

Alternatives

• Mistral Large 4: a larger model from Mistral.
• Mistral NeMo: another Mistral model in this catalog.
• Mistral Tiny: another Mistral model in this catalog.

Conclusion

Mistral Small v24.09 is a retired API model that lives on as open weights. For new work, follow Mistral's own recommendation and evaluate Mistral Small 4. See the models overview, the model card and the models category.