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Devstral Small 2507

Developed by unsloth
Devstral is a large language model specifically designed for software engineering tasks, developed in collaboration by Mistral AI and All Hands AI. It performs excellently in the SWE-bench benchmark test and is the top-ranked open-source model.
Downloads 155
Release Time : 7/10/2025

Model Overview

Devstral is fine-tuned based on Mistral-Small-3.1 and focuses on software engineering tasks, such as code exploration, multi-file editing, and driving software engineering agents. It has a context window of 128k tokens and is suitable for local deployment and device-side use.

Model Features

High-performance Coding Agent
Achieved a score of 53.6% in the SWE-bench benchmark test, outperforming other open-source models.
Large Context Window
Supports a context length of 128k tokens, suitable for handling large codebases.
Lightweight Design
With a scale of 24 billion parameters, it can run on an RTX 4090 or a Mac with 32GB of RAM.
Tool Call Support
Supports Mistral's function call format, facilitating integration into the development workflow.

Model Capabilities

Code generation
Code understanding
Multi-file editing
Automation of software engineering tasks
Test coverage analysis
Game development assistance

Use Cases

Code Analysis and Testing
Test Coverage Analysis
Analyze the test coverage of the codebase and generate visual charts
Generate coverage distribution maps, pie charts, and summary reports
Game Development
Hybrid Game Development
Create a web game by combining elements of 'Space Invaders' and 'Pong'
Generate playable web game code
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