Mistral AI releases Devstral 2 model and Vibe CLI for terminal code automation

Mistral AI has launched Devstral 2, a 123 billion parameter coding model designed as an open weight alternative to proprietary autonomous software engineering systems. Building on the earlier Mistral 3 release, this move signals Mistral’s intent to challenge larger labs such as Anthropic.

Unlike tools focused on generating individual code snippets, Devstral 2 targets the emerging “vibe coding” market by supporting autonomous exploration, modification, and execution across entire codebases. Mistral claims it can undercut closed competitors’ costs by nearly 85 percent; currently, Devstral 2 access is free via API, later shifting to $0.40 per million input tokens and $2.00 per million output tokens. Deployment requires at least four H100 graphics processing units, but Devstral Small 2 provides a 24 billion parameter alternative suitable for use on consumer hardware, with lower pricing at $0.10 and $0.30 respectively per million tokens.

Mistral also introduced Vibe CLI, a command line tool for natural language driven code automation that enters the same space popularized by alternatives such as Cursor, Supabase, and Replit. It handles file manipulation, code search, version control, and command execution while building project aware context through file structure and Git scanning. The CLI supports multi file refactoring with persistent session history and can run as a standalone utility or as an extension inside Zed Editor.