TermsAI ModelsAI Systems
Model Lifecycle
Technical Documentation
## Model Lifecycle
Release dates, types and retirement status for all models in this family.
ModelTypeClassificationRelease DateRetirement DateStatusLeanstral 1.5model versionspecialized modelJuly 2, 2026N/AActiveLeanstralmodel versionspecialized modelMarch 16, 2026N/AActiveMistral Small 4basegeneral purpose ai modelMarch 16, 2026N/AActive
## Frequently asked questions.
What is a model version ?
What is an update ?
What is a base model ?legal.mistral.ai
Leanstral Includes Leanstral, Leanstral 1.5 and subsequent versions. March 16, 2026
Версия от — это не последняя зафиксированная редакция.