Devstral

Devstral

Mistral AI
SWE-1.5

SWE-1.5

Cognition
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+

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About

Devstral is an open source, agentic large language model (LLM) developed by Mistral AI in collaboration with All Hands AI, specifically designed for software engineering tasks. It excels at navigating complex codebases, editing multiple files, and resolving real-world issues, outperforming all open source models on the SWE-Bench Verified benchmark with a score of 46.8%. Devstral is fine-tuned from Mistral-Small-3.1 and features a long context window of up to 128,000 tokens. It is optimized for local deployment on high-end hardware, such as a Mac with 32GB RAM or an Nvidia RTX 4090 GPU, and is compatible with inference frameworks like vLLM, Transformers, and Ollama. Released under the Apache 2.0 license, Devstral is available for free and can be accessed via Hugging Face, Ollama, Kaggle, Unsloth, and LM Studio.

About

SWE-1.5 is the latest agent-model release by Cognition, purpose-built for software engineering and characterized by a “frontier-size” architecture comprising hundreds of billions of parameters and optimized end-to-end (model, inference engine, and agent harness) for both speed and intelligence. It achieves near-state-of-the-art coding performance and sets a new benchmark in latency, delivering inference speeds up to 950 tokens/second, roughly six times faster than its predecessor Haiku 4.5 and thirteen times faster than Sonnet 4.5. The model was trained using extensive reinforcement learning in realistic coding-agent environments with multi-turn workflows, unit tests, quality rubrics, and browser-based agentic execution; it also benefits from tightly integrated software tooling and high-throughput hardware (including thousands of GB200 NVL72 chips and a custom hypervisor infrastructure).

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software developers and engineering teams seeking a tool to assist with code exploration, debugging, and multi-file editing tasks

Audience

Software engineering teams and organizations looking for a tool offering an AI coding agent capable of rapid, accurate code generation, large-scale codebase navigation and real-time developer augmentation

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$0.1 per million input tokens
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Mistral AI
Founded: 2023
France
mistral.ai/news/devstral

Company Information

Cognition
Founded: 2023
United States
cognition.ai/blog/swe-1-5

Alternatives

DeepCoder

DeepCoder

Agentica Project

Alternatives

SWE-1.6

SWE-1.6

Cognition
DeepSWE

DeepSWE

Agentica Project
Mistral Vibe

Mistral Vibe

Mistral AI
GLM-4.6

GLM-4.6

Zhipu AI
Mistral Large 3

Mistral Large 3

Mistral AI
MiniMax M2.5

MiniMax M2.5

MiniMax
Composer 1

Composer 1

Cursor

Categories

Categories

Integrations

Hugging Face
Kaggle
LM Studio
Mistral AI
Mistral Code
Ollama
Unsloth

Integrations

Hugging Face
Kaggle
LM Studio
Mistral AI
Mistral Code
Ollama
Unsloth
Claim Devstral and update features and information
Claim Devstral and update features and information
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