Imagine a future where AI-driven coding tools are not locked behind paywalls or proprietary platforms. Mistral AI’s introduction of Devstral 2 and Mistral Vibe CLI brings this vision to life, putting advanced, agentic code automation within reach for all developers,cloud-based or local.
Breakthrough Features and Benefits
- Devstral 2 is an advanced coding model, available in both a flagship 123B-parameter version and the more accessible Devstral Small 2 at 24B parameters.
- Open-source licensing is a priority: Devstral 2 uses a modified MIT license, while Small 2 is under Apache 2.0, ensuring broad and flexible use.
- Performance is impressive,Devstral 2 scores 72.2% on SWE-bench Verified with fewer parameters than many rivals.
- Developers can realize up to 7x cost savings versus proprietary solutions for real-world coding tasks.
- The Mistral Vibe CLI is a native, open-source command-line tool that leverages these models for seamless code automation from your terminal or IDE.
- Devstral Small 2 is optimized for local deployment, running smoothly on consumer hardware to democratize advanced AI capabilities.
- Both models support on-premises deployment and custom fine-tuning, making them ideal for enterprises and teams with unique needs.
Compact Size, Big Performance
Devstral 2’s dense transformer architecture (123B parameters, 256K context window) delivers top-tier results while remaining efficient and accessible. Even the smaller Devstral Small 2 rivals or surpasses much larger models, achieving 68.0% on SWE-bench Verified and supporting local, private, and multimodal workflows.
These models are more compact than competitors like DeepSeek V3.2 and Kimi K2, lowering hardware requirements and making advanced AI-driven coding accessible to more users.
Automation Ready for Real-World Production
Devstral 2 is engineered to handle complex codebases, orchestrating multi-file changes, tracking dependencies, catching failures, and applying fixes. This makes it invaluable for bug fixing and modernizing legacy systems. With the option for custom fine-tuning, it adapts to specific languages and large enterprise projects.
Benchmarks show Devstral 2 outperforms many open models in human evaluations, although top-tier closed-source models like Claude Sonnet 4.5 still have an edge. Still, user feedback underscores Devstral’s reliability and smooth tool integration, marking a significant leap for open-source AI automation in software engineering.
Mistral Vibe CLI: Smarter Terminal Automation
The Mistral Vibe CLI brings interactive AI-powered coding to your terminal or IDE. Its key features include:
- Context-aware code suggestions based on project scanning
- Natural language commands for exploring and modifying codebases
- Multi-file orchestration and high-level architectural reasoning
- Integrated version control, file management, persistent history, and autocompletion
- Customizable permissions, auto-approval features, and theme options
- Support for programmatic scripting and seamless IDE integration via the Agent Communication Protocol
Vibe CLI is open-source (Apache 2.0), easy to install, and available as a Zed extension, simplifying integration into your workflow.
Accessible Deployment and Getting Started
Devstral 2 is currently free via API, with future pricing at $0.40/$2.00 per million tokens (input/output). Devstral Small 2 is even more affordable at $0.10/$0.30.
Supported by partners like Kilo Code and Cline, the models run efficiently on a range of NVIDIA GPUs and even CPU-only setups for Small 2. For best results, use a temperature setting of 0.2 and refer to Mistral’s comprehensive deployment guides on GitHub.
Open AI for Every Developer
Devstral 2, Devstral Small 2, and Mistral Vibe CLI signal a new era of open-source AI in software development. These tools provide scalable, cost-efficient, and customizable solutions for teams modernizing enterprise code or building new projects. Mistral AI invites developers to join the journey,whether through feedback, collaboration, or joining their team,to shape the future of open AI innovation.
Source: Mistral AI Blog
Devstral 2 & Mistral Vibe CLI: Open-Source AI Tools for Coding Automation