Devstral 2

Spec

Attribute	Value
Developer	Mistral AI
Released	2026-05 (exact day not stated in source)
Announced	2026-05
Context window	256K (both variants)
Pricing	Devstral 2: $0.40 in / $2.00 out per M tokens; Small 2: $0.10 / $0.30 (post-free period)
License	Devstral 2: Modified MIT; Small 2: Apache 2.0
Availability	API; open weights

Variants

Field	Devstral 2	Devstral Small 2
Parameters	123B	24B
SWE-bench Verified	72.2%	68.0%
Deployment	≥4 H100-class GPUs	DGX Spark / GeForce RTX
Multimodal	Image inputs ✓	Image inputs ✓

Release Date

May 2026 (exact date TBD — flagged in sources as a May 2026 release)

Key Claims

• 7× more cost-efficient than Claude Sonnet on real-world tasks (Mistral's claim)
• Devstral Small 2 runs on consumer hardware (RTX-class GPUs, DGX Spark) — local deployment is viable
• Both models are multimodal (image inputs) — can power visual/multimodal agents

Compared To

Model	SWE-bench Verified	Open-weight
Devstral 2 (123B)	72.2%	Yes (modified MIT)
Devstral Small 2 (24B)	68.0%	Yes (Apache 2.0)
Claude Sonnet (API)	~70%+ (est.)	No
Grok Build	Not reported	No

Use Cases

• Agentic software engineering (SWE-bench tasks)
• Codebase exploration and modification
• Powers devstral-2#Mistral-Vibe-CLI

Mistral Vibe CLI

Open-source CLI coding agent built on Devstral:

• License: Apache 2.0
• GitHub: github.com/mistralai/mistral-vibe
• Natural language → file manipulation, code search, version control, shell commands
• Project-aware context (Git status, file structure auto-scan)
• Integrates with IDEs via the Agent Communication Protocol (ACP)
• Available as an extension for the Zed editor
• Partnered with Kilo Code and Cline

Mistral Vibe CLI competes directly with Grok Build (xAI) and Claude Code (Anthropic).

Sources

• Mistral blog: Devstral 2 + Vibe CLI
• VentureBeat coverage

Related

• Mistral AI
• Mistral Medium 3.5 — general-purpose model, same release cycle
• Grok Build — competing agentic coding CLI (xAI)
• Agents (LLM Agents) — agentic coding is the primary use case