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Code assistant

devstral2

State-of-the-art open-source coding models and CLI agent for software engineering.

Source rating 5.0 (58) 0 views 0 saves Freemium
AI coding model open-source Code agent
More categories (12)
CLI assistant Software engineering Code generation Bug fixing Code modernization Large Language Model (LLM) Transformer model SWE-Bench Cost-Efficient AI IDE integration Multimodal AI NVIDIA
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Free + from $0.40/$2.00 per million tokens

Verdict

A quick read before you dig into the full page.

Best if
State-of-the-art open-source coding models and CLI agent for software engineering
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You need enterprise SLAs or a fully managed team plan right away
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Freemium · Free + from $0.40/$2.00 per million tokens

Overview

Devstral 2 is a state-of-the-art, 123B-parameter open-source coding model, a dense transformer supporting a 256K context window. It achieves 72.2% on SWE-bench Verified, establishing it as one of the best open-weight models while remaining highly cost-efficient. Released under a modified MIT license, Devstral 2 sets the open state-of-the-art for code agents. Mistral Vibe CLI is a native, open-source command-line coding assistant powered by Devstral, designed to solve software engineering tasks autonomously by exploring, modifying, and executing changes across codebases using natural language.

devstral2 screenshot

Access & connections

Where you can use devstral2.

Platforms

CLI

Capabilities

What this tool accepts, produces, and is strongest at.

Highlights

  • State-of-the-art open-source coding model (Devstral 2)
  • High performance on SWE-bench Verified (72.2% for Devstral 2, 68.0% for Devstral Small 2)
  • Large context window (256K)
  • Cost-efficient (up to 7x more than Claude Sonnet)
  • Compact and efficient model sizes
  • Code Agent Excellence (explores codebases, orchestrates changes, maintains architecture-level context)
  • Smart Error Handling (tracks dependencies, detects failures, retries with corrections)
  • Multi-File Orchestration across entire codebases
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  • Native, open-source command-line coding assistant (Mistral Vibe CLI)
  • Customizable CLI for specific languages or enterprise codebases
  • Project-Aware Context and Smart References in CLI
  • Persistent History, autocompletion, and customizable themes in CLI
  • IDE Integration for Mistral Vibe CLI (Zed extension, Agent Communication Protocol)
  • Image Input Support for Devstral Small 2

FAQ 9

What is devstral2?
Devstral 2 is a state-of-the-art, 123B-parameter open-source coding model, a dense transformer supporting a 256K context window. It achieves 72.2% on SWE-bench Verified, establishing it as one of the best open-weight models while remaining highly cost-efficient. Released under a modified MIT license, Devstral 2 sets the open state-of-the-art for code agents. Mistral Vibe CLI is a native, open-source command-line coding assistant powered by Devstral, designed to solve software engineering tasks autonomously by exploring, modifying, and executing changes across codebases using natural language.
How to use devstral2?
Users can access Devstral 2 via API, which is currently offered for free, or through self-hosted deployment on their own infrastructure with NVIDIA support. Mistral Vibe CLI can be installed directly in the terminal using a curl command (`curl -LsSf https://mistral.ai/vibe/install.sh | bash`) and then used as a native coding assistant.
What is Devstral 2?
Devstral 2 is a 123B-parameter open-source coding model, a dense transformer supporting a 256K context window. It achieves 72.2% on SWE-bench Verified, establishing it as one of the best open-weight models while remaining highly cost-efficient.
What is Mistral Vibe CLI?
Mistral Vibe CLI is a native, open-source command-line coding assistant powered by Devstral. It solves software engineering tasks autonomously by exploring, modifying, and executing changes across codebases using natural language.
How does Devstral 2 compare to other models?
Devstral 2 achieves 72.2% on SWE-bench Verified, making it a top open-weight model. It is 5x and 28x smaller than DeepSeek V3.2, 8x and 41x smaller than Kimi K2, and up to 7x more cost-efficient than Claude Sonnet at real-world tasks. Human evaluation shows a 42.8% win rate versus 28.6% loss rate against DeepSeek V3.2.
What is Devstral Small 2?
Devstral Small 2 is a 24B-parameter model that scores 68.0% on SWE-bench Verified. It is designed for local and edge deployment, runs on consumer-grade GPUs or CPUs, and supports image inputs for multimodal agents.
How can I use Devstral 2?
Devstral 2 can be used via API (currently free, integrated with Kilo Code and Cline) or through self-hosted deployment on your own infrastructure with NVIDIA support.
What are the deployment requirements?
For Devstral 2, a minimum of 4 H100-class GPUs is required for data center deployment. Devstral Small 2 can run on a single consumer-grade GPU or even without a dedicated GPU (CPU support).
Can Devstral 2 be fine-tuned?
The Mistral Vibe CLI, which is powered by Devstral, can be fine-tuned to prioritize specific languages or optimize for large enterprise codebases.
devstral2 Free + from $0.40/$2.00 per million tokens
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