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Mistral mistral-medium-2508

Mistral Medium 3.1 (Mistral)

Deprecated Shuts down in 28 days

Yes — Mistral deprecated Mistral Medium 3.1 on May 22, 2026 and shuts it down on August 31, 2026 (in 28 days). The recommended replacement is Mistral Medium 3.5.

The August 2025 refresh of Mistral Medium 3, and the model most Mistral API traffic sat on through the second half of that year. It is deprecated but not yet gone: Mistral gave the 3.x Mediums an unusually long runway, announcing on 22 May 2026 and setting the shutdown for the end of August, so this is the one entry in the wave you can still call today.

The facts

Provider Mistral
Model id mistral-medium-2508
Released
Deprecated May 22, 2026
Shutdown August 31, 2026 · in 28 days
Status Deprecated
Last verified August 3, 2026

What to use instead

Mistral Medium 3.5 mistral-medium-3-5-26-04 Provider-recommended Active

Medium 3.5 is multimodal where 3.1 was text-only, so a request that used to be rejected for containing an image part will now succeed and be billed.

What parameters mistral-medium-3-5-26-04 accepts on modelparams.dev

Change the id

In most cases the migration is one string. Check the parameter differences before you ship — newer models drop older sampling knobs more often than they add them.

- "model": "mistral-medium-2508"
+ "model": "mistral-medium-3-5-26-04"

Frequently asked questions

When will Mistral Medium 3.1 shut down?
Mistral Medium 3.1 is scheduled to shut down on August 31, 2026, in 28 days.
What replaces Mistral Medium 3.1?
Mistral recommends Mistral Medium 3.5 (`mistral-medium-3-5-26-04`) as the replacement for Mistral Medium 3.1. Medium 3.5 is multimodal where 3.1 was text-only, so a request that used to be rejected for containing an image part will now succeed and be billed.
Is Mistral Medium 3.1 still available?
Yes, for now. Mistral Medium 3.1 is deprecated but still answers requests until August 31, 2026. Deprecated models get no further updates and are the first to lose capacity.
How do I migrate from Mistral Medium 3.1 to mistral-medium-3-5-26-04?
Swap the model id in your API call: replace "mistral-medium-2508" with "mistral-medium-3-5-26-04". Medium 3.5 is multimodal where 3.1 was text-only, so a request that used to be rejected for containing an image part will now succeed and be billed.

Sources

Found something wrong? The data is one YAML file — edit it on GitHub.

This page, for machines

Drop the badge in a README so it turns red the day this model is retired:

[![mistral-medium-2508](https://img.shields.io/endpoint?url=https://modeldeprecations.dev/badge/mistral/mistral-medium-2508.json)](https://modeldeprecations.dev/mistral/mistral-medium-2508)

Other Mistral models

All Mistral deprecations →

How to use this site

The full guide, in Markdown. Copy it and hand it to a coding agent verbatim.

# How to use modeldeprecations.dev

[modeldeprecations.dev](https://modeldeprecations.dev) answers one question per model: is it deprecated,
when does it shut down, and what replaces it. Every date on the site is cited to the
provider's own documentation, with the date we last checked it.

Three lifecycle states are used, matching the providers' own vocabulary:

- **active** — still supported, no deprecation announced.
- **deprecated** — the provider has announced it is going away. It still answers requests.
- **retired** — API access is gone. Requests fail.

A model can be active *and* carry a shutdown date: Anthropic publishes a
"not sooner than" date and Google publishes an earliest shutdown date for models
that are current and fully supported. Those are reported as scheduled shutdowns,
not deprecations, because that is what the provider actually committed to.

## Check one model

```bash
curl https://modeldeprecations.dev/api/v1/models/openai/gpt-4-32k.json
```

Or fetch the page as Markdown, which includes the answer, the dates and the sources:

```bash
curl https://modeldeprecations.dev/openai/gpt-4-32k.md
```

## Full catalog

```bash
curl https://modeldeprecations.dev/api/v1/models.json
```

Ids are `provider/model`. Dated snapshots (`gpt-4-32k-0613`) are listed as aliases of
their canonical entry rather than as separate records.

Each entry carries `computed_status`, the lifecycle state recomputed against the build
date — so a model whose shutdown has passed reads `retired` without anyone editing data.

## Badges

A shields.io endpoint per model, for READMEs that should go red when a model dies:

```
https://img.shields.io/endpoint?url=https://modeldeprecations.dev/badge/openai/gpt-4-32k.json
```

## Calendar and changelog

- Subscribe to every shutdown date: https://modeldeprecations.dev/calendar.ics
- Changelog RSS: https://modeldeprecations.dev/changelog.xml

## JSON Schema

```bash
curl https://modeldeprecations.dev/api/v1/schema.json
```

## Contribute

Data lives in YAML under `models/{provider}/{model}.yaml` in the
[GitHub repo](https://github.com/mnfst/modeldeprecations.dev). Every lifecycle date needs a source URL; CI rejects a
date without one. Open a PR.

## For agents

- Machine-readable overview: https://modeldeprecations.dev/llms.txt
- This guide plus every model inline: https://modeldeprecations.dev/llms-full.txt
- Any page also exists as Markdown: append `.md` to a model URL.
- In a browser, this site registers a **WebMCP** tool on `navigator.modelContext`:
  `check_model_deprecation`, `list_shutdowns`, `find_replacement`, and `get_usage_guide`.
- Parameters each model accepts are catalogued on the sibling site, https://modelparams.dev.