# Mistral Magistral Small 1.0 — deprecation status

> Yes — Magistral Small 1.0 is retired. Mistral deprecated it on October 31, 2025 and shut it down on November 30, 2025; API requests to it now fail. The recommended replacement is Mistral Small 4.

The first open reasoning model Mistral published, distilled from Magistral Medium and released under Apache 2.0 on the same June 2025 day. Its API life was under five months. If you are trying to reproduce a June 2025 evaluation run, the id no longer resolves and you will need the Hugging Face weights.

## Facts

| Field | Value |
| --- | --- |
| Provider | Mistral |
| Model id | `magistral-small-2506` |
| Status | Retired |
| Deprecated | October 31, 2025 |
| Shutdown | November 30, 2025 (246 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-2506"
+ "model": "mistral-small-4-0-26-03"
```

## FAQ

### When did Mistral Magistral Small 1.0 shut down?

Mistral Magistral Small 1.0 shut down on November 30, 2025. API requests to it fail from that date onward.

### What replaces Mistral Magistral Small 1.0?

Mistral recommends Mistral Small 4 (`mistral-small-4-0-26-03`) as the replacement for Mistral Magistral Small 1.0.

### Is Mistral Magistral Small 1.0 still available?

No. Mistral Magistral Small 1.0 is retired and no longer served — it was shut down on November 30, 2025. Calls to it return an error.

### How do I migrate from Mistral Magistral Small 1.0 to mistral-small-4-0-26-03?

Swap the model id in your API call: replace "magistral-small-2506" 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-2506
JSON: https://modeldeprecations.dev/api/v1/models/mistral/magistral-small-2506.json