Leanstral 1.5

labs-leanstral-1-5-1

CHAT ReasoningMultimodal Open-weight

Leanstral 1.5 (labs-leanstral-1-5-1) is a chat model from mistral with a 262.1K-token context window; open-weight; capabilities tools, vision, reasoning; input image, text; output text.

262.1KContext

131.1KMax output

Specifications

Context window: 262,144 tokens (262.1K)
Max output: 131,072 tokens
Weights: Open-weight
Input modalities: image text
Output modalities: text
Release date: 2026-06-30

Capabilities

tools vision reasoning

Provenance

litellmmodels-dev

Last verified: 2026-10-30

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