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Mistral AI in December 2025: Devstral 2, Mistral 3 and Vibe CLI

Mistral AI in December 2025: Devstral 2, Mistral 3 and Vibe CLI

A Decisive Month for Mistral AI

December 2025 marks a turning point for Mistral AI with the launch of Devstral 2, their new coding agentic model that rivals the best, accompanied by Mistral Vibe CLI, a command-line coding agent. The Mistral 3 family completes the offering with open-source multimodal models.


Devstral 2: The Reference Open-Source Coding Model

December 9, 2025 — Mistral launches Devstral 2, a family of coding models available in two sizes, both open-source.

🔗 Official Announcement

Two Sizes for All Needs

ModelParametersSWE-benchAPI Price (input/output)License
Devstral 2123B72.2%0.40/0.40 / 2.00 per M tokensModified MIT
Devstral Small 224B68.0%0.10/0.10 / 0.30 per M tokensApache 2.0

Performance Against Competition

Devstral 2 stands out for its efficiency:

  • 5x smaller than DeepSeek V3.2
  • 28x smaller than Kimi K2
  • Up to 7x more cost-effective than Claude Sonnet
  • Context window of 256K tokens

Introducing the Devstral 2 coding model family. Two sizes, both open source. Also, meet Mistral Vibe, a native CLI, enabling end-to-end automation. — @MistralAI on X

Human Evaluation

Comparison vsWin Rate
DeepSeek V3.242.8%
ModelMinimum Configuration
Devstral 24 H100-class GPUs
Devstral Small 2Single GPU (RTX), DGX Spark, or CPU only

Mistral Vibe CLI: The Terminal Coding Agent

December 9, 2025 — Along with Devstral 2, Mistral launches Vibe, an open-source command-line coding assistant.

Installation

curl -LsSf https://mistral.ai/vibe/install.sh | bash

Or via uv:

uv tool install mistral-vibe

Key Features

FeatureDescription
Project-aware contextAutomatic analysis of structure and Git
Multi-file orchestrationArchitectural reasoning
Smart references@autocomplete, ! for shell
Persistent historyContext retained between sessions
Customizable themesAdaptable interface

Integrations

  • Zed IDE extension available
  • Local deployment configurable via config.toml
  • Compatible with OpenHands, Cline, and other tools

200k Context Update

December 10, 2025 — Vibe’s context window is doubled from 100k to 200k tokens.

We’ve doubled the Vibe context limit from 100k to 200k. Happy shipping! — @MistralAI on X


Mistral 3: Open-Source Multimodal Model Family

December 2, 2025 — Mistral launches the Mistral 3 family, open-source frontier models with multimodal capabilities.

🔗 Official Announcement

The Complete Family

ModelArchitectureParametersFocus
Mistral Large 3Sparse MoE41B active / 675B totalFlagship model
Ministral 14BDense14BDemanding usage
Ministral 8BDense8BBalanced
Ministral 3BDense3BEdge / mobile

Performance

  • Mistral Large 3: #2 on LMArena in the OSS non-reasoning category
  • Ministral: Best cost-performance ratio of OSS models
  • Reasoning variants of Ministral: 85% accuracy on AIME ‘25 (14B)

Common Features

FeatureDescription
MultimodalNative image understanding
Multilingual40+ native languages
VariantsBase, Instruct, Reasoning
LicenseApache 2.0

Availability

  • Mistral AI Studio
  • Amazon Bedrock, Azure Foundry
  • Hugging Face, Modal, IBM WatsonX
  • OpenRouter, Fireworks

Mistral OCR 3: Next-Generation Document Processing

December 17, 2025 — Mistral launches OCR 3, a model specialized in document extraction with state-of-the-art accuracy.

🔗 Official Announcement

Performance

MetricValue
Win rate vs OCR 274%
SpecialtiesForms, tables, handwriting
RobustnessCompression, skew, low-quality scans

Pricing

ModePrice
API$2 / 1000 pages
Batch$1 / 1000 pages

Key Features

  • Handwriting — Including cursive and mixed annotations
  • Forms — Detection of checkboxes, labels, dense layouts
  • Complex Tables — Headers, merged cells, HTML colspan/rowspan
  • Markdown Output — Enriched with HTML table reconstruction

Availability

  • API via model mistral-ocr-2512
  • Document AI Playground in Mistral AI Studio

What This Means

December 2025 confirms Mistral AI’s strategy:

  1. Competitive Open-Source — Devstral 2 and Mistral 3 rival proprietary models while remaining under Apache 2.0
  2. Developer Focus — Mistral Vibe CLI offers a credible alternative to Claude Code and Codex CLI
  3. Complete Ecosystem — From coding models to OCR, Mistral covers more and more use cases
  4. Efficiency — Smaller models but performance comparable to giants

Sources