# Mistral Devstral Medium 1.0 — deprecation status

> Yes — Devstral Medium 1.0 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 Medium 3.5.

The premier-tier half of the first Devstral generation, sold as the coding model you paid for when the open Devstral Small was not strong enough. It ran ten months before the February 2026 deprecation wave took it, and unlike Small it never had an open-weights release to fall back on.

## Facts

| Field | Value |
| --- | --- |
| Provider | Mistral |
| Model id | `devstral-medium-2507` |
| Status | Retired |
| Deprecated | February 27, 2026 |
| Shutdown | May 31, 2026 (64 days ago) |
| Last verified | August 3, 2026 |

## Replacement

- **Mistral Medium 3.5** (`mistral-medium-3-5-26-04`) · recommended — https://modeldeprecations.dev/mistral/mistral-medium-3-5-26-04
  - Parameters it accepts: https://modelparams.dev/models/mistral/mistral-medium-3-5-26-04

```diff
- "model": "devstral-medium-2507"
+ "model": "mistral-medium-3-5-26-04"
```

## FAQ

### When did Mistral Devstral Medium 1.0 shut down?

Mistral Devstral Medium 1.0 shut down on May 31, 2026. API requests to it fail from that date onward.

### What replaces Mistral Devstral Medium 1.0?

Mistral recommends Mistral Medium 3.5 (`mistral-medium-3-5-26-04`) as the replacement for Mistral Devstral Medium 1.0.

### Is Mistral Devstral Medium 1.0 still available?

No. Mistral Devstral Medium 1.0 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 Medium 1.0 to mistral-medium-3-5-26-04?

Swap the model id in your API call: replace "devstral-medium-2507" with "mistral-medium-3-5-26-04". 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-medium-2507
JSON: https://modeldeprecations.dev/api/v1/models/mistral/devstral-medium-2507.json