# Mistral Magistral Small 1.2 — deprecation status

> Yes — Magistral Small 1.2 is retired. Mistral deprecated it on April 30, 2026 and shut it down on July 31, 2026; API requests to it now fail. The recommended replacement is Mistral Small 4.

The open-weights counterpart to Magistral Medium 1.2, Apache 2.0 and small enough to run on a single consumer GPU, which is why it showed up in a lot of local reasoning setups. Its API id retired on 31 July 2026 alongside the rest of the line, but the weights it shipped are still downloadable.

## Facts

| Field | Value |
| --- | --- |
| Provider | Mistral |
| Model id | `magistral-small-2509` |
| Status | Retired |
| Deprecated | April 30, 2026 |
| Shutdown | July 31, 2026 (3 days ago) |
| Last verified | August 3, 2026 |

## Replacement

- **Mistral Small 4** (`mistral-small-4-0-26-03`) · recommended — https://modeldeprecations.dev/mistral/mistral-small-4-0-26-03
  - Parameters it accepts: https://modelparams.dev/models/mistral/mistral-small-4-0-26-03

```diff
- "model": "magistral-small-2509"
+ "model": "mistral-small-4-0-26-03"
```

## FAQ

### When did Mistral Magistral Small 1.2 shut down?

Mistral Magistral Small 1.2 shut down on July 31, 2026. API requests to it fail from that date onward.

### What replaces Mistral Magistral Small 1.2?

Mistral recommends Mistral Small 4 (`mistral-small-4-0-26-03`) as the replacement for Mistral Magistral Small 1.2.

### Is Mistral Magistral Small 1.2 still available?

No. Mistral Magistral Small 1.2 is retired and no longer served — it was shut down on July 31, 2026. Calls to it return an error.

### How do I migrate from Mistral Magistral Small 1.2 to mistral-small-4-0-26-03?

Swap the model id in your API call: replace "magistral-small-2509" with "mistral-small-4-0-26-03". Keep the rest of the request the same, then re-check the parameters the new model accepts before you ship.

## Sources

- [Mistral models overview](https://docs.mistral.ai/getting-started/models/models_overview/) — accessed 2026-08-03

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Canonical page: https://modeldeprecations.dev/mistral/magistral-small-2509
JSON: https://modeldeprecations.dev/api/v1/models/mistral/magistral-small-2509.json