# Mistral Devstral Small 1.1 — deprecation status

> Yes — Devstral Small 1.1 is retired. Mistral deprecated it on February 27, 2026 and shut it down on May 31, 2026; API requests to it now fail. The recommended replacement is Mistral Small 4.

An Apache 2.0 coding model that punched well above its size on SWE-bench and got adopted fast by people running agents locally. The API id is retired, but because the weights were released openly this is one of the few entries in the catalogue where the model itself did not go anywhere - only Mistral's hosting of it did.

## Facts

| Field | Value |
| --- | --- |
| Provider | Mistral |
| Model id | `devstral-small-2507` |
| Status | Retired |
| Deprecated | February 27, 2026 |
| Shutdown | May 31, 2026 (64 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": "devstral-small-2507"
+ "model": "mistral-small-4-0-26-03"
```

## FAQ

### When did Mistral Devstral Small 1.1 shut down?

Mistral Devstral Small 1.1 shut down on May 31, 2026. API requests to it fail from that date onward.

### What replaces Mistral Devstral Small 1.1?

Mistral recommends Mistral Small 4 (`mistral-small-4-0-26-03`) as the replacement for Mistral Devstral Small 1.1.

### Is Mistral Devstral Small 1.1 still available?

No. Mistral Devstral Small 1.1 is retired and no longer served — it was shut down on May 31, 2026. Calls to it return an error.

### How do I migrate from Mistral Devstral Small 1.1 to mistral-small-4-0-26-03?

Swap the model id in your API call: replace "devstral-small-2507" 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/devstral-small-2507
JSON: https://modeldeprecations.dev/api/v1/models/mistral/devstral-small-2507.json