# Migrating off magistral-medium-2509

**Mistral** retires **magistral-medium-2509** on **2026-07-31**.
Documented replacement: **Mistral Medium 3.5**.

Source: https://docs.mistral.ai/getting-started/models/models_overview/
Source last checked: 2026-09-28.
Calendar as of 2026-09-28 UTC.

| Model | Provider | Retires | Replacement |
|---|---|---|---|
| magistral-medium-2509 | Mistral | 2026-07-31 | Mistral Medium 3.5 |

Also retiring on 2026-07-31:
- mistral-small-2506 (Mistral) → Mistral Small 4
- devstral-2512 (Mistral) → Mistral Medium 3.5
- magistral-small-2509 (Mistral) → Mistral Small 4
- open-mistral-nemo-2407 (Mistral) → Ministral 3 8B

Source: https://llmlatency.dev/migrate/mistral-magistral-medium-2509