# mistral-medium-3-5

Calls to the model mistral-medium-3-5 stop working on April 30, 2027.

## The error Mistral returns once mistral-medium-3-5 is gone

HTTP 400

```json
{"object":"error","message":"Invalid model: mistral-medium-3-5","type":"invalid_model","param":null,"code":"1500"}
```

## What to use instead

Recommended by Mistral: Mistral Large 4.

- API: Mistral (api.mistral.ai)
- Model: mistral-medium-3-5
- Released: April 30, 2026 (models.dev)
- Kind: Model retirement
- Announced: October 31, 2026
- Takes effect: April 30, 2027
- Calls after that day: fail
- Calls it hits: `model mistral-medium-3-5`
- Source: [Lifecycle page](https://docs.mistral.ai/getting-started/models/models_overview/)
- Verified: October 31, 2026, against Mistral's own pages
- Page: https://www.okapi.bot/models/mistral/mistral-medium-3-5/

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent