Leanstral 1.5.1 is Mistral AI's language model with a 262K context window and up to 131K output tokens. A lightweight, efficiency-focused large language model designed for low-resource deployment scenarios.
Specifications
Canonical IDmistral-leanstral-1-5-1
TypeLanguage
StatusActive
CreatorMistral AIMistral AI
Context Window262K tokens
Max Output131K tokens
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning·
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Leanstral 1.5.1—262K——Current
Leanstral 1.5—262K$0.000$0.000Available
Leanstral—256K——Available

Model IDs

mistral-leanstral-1-5-1
mistral/labs-leanstral-1-5-1