Mistral
leanstral-1-5
Leanstral 1.5 (Mistral)
Active
No — Leanstral 1.5 is not deprecated as of August 3, 2026. Mistral has announced neither a deprecation nor a shutdown date for it.
Leanstral graduated out of Mistral's labs prefix with this release: the experimental id was labs-leanstral-2603 and it was retired five weeks after 1.5 landed. Losing the labs prefix is the signal that matters here, because ids under it carry no retirement guarantee at all and this one now sits in the supported Apache 2.0 range.
The facts
| Provider | Mistral |
|---|---|
| Model id | leanstral-1-5 |
| Released | — |
| Deprecated | not deprecated |
| Shutdown | not published |
| Status | Active |
| Last verified | August 3, 2026 |
Frequently asked questions
- Is Mistral Leanstral 1.5 still available?
- Yes. Mistral Leanstral 1.5 is active and fully supported as of August 3, 2026.
Models that migrate here
Mistral names Leanstral 1.5 as the replacement for one model.
Sources
- Mistral models overview · docs.mistral.ai · accessed August 3, 2026
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:
[](https://modeldeprecations.dev/mistral/leanstral-1-5)