Leanstral (26.03) (labs-leanstral-2603) shut down on 2026-06-30 per Mistral's deprecation page (checked 2026-10-17). The official replacement is labs-leanstral-1-5. The published context window changes from 256,000 tokens on labs-leanstral-2603 to 256,000 tokens on labs-leanstral-1-5.
retired
| Announced | Not published |
|---|---|
| Deprecated | 2026-05-22 |
| Shutdown | 2026-06-30 |
| Kind | exact |
Replacement named on the models page: Leanstral 1.5.
See the replacement diff · Mistral models
| Input price / 1M | Not published |
|---|---|
| Output price / 1M | Not published |
| Cached input / 1M | Not published |
| Context window | 256,000 · source, checked 2026-10-17 |
| Max output | Not published |
| Reasoning | Not published |
| Vision | Not published |
| Tools | Not published |
Leanstral (26.03) (labs-leanstral-2603) shut down on 2026-06-30 per Mistral's deprecation page (checked 2026-10-17). The official replacement is labs-leanstral-1-5. The published context window changes from 256,000 tokens on labs-leanstral-2603 to 256,000 tokens on labs-leanstral-1-5.
The official replacement is labs-leanstral-1-5.
Leanstral (26.03) status is retired.
Leanstral | 26.03 | labs-leanstral-2603 | 5/22/2026 6/30/2026 | Leanstral 1.5
labs-leanstral-2603 | Context 256k