Mistral Vibe
mistral-vibe-46003e5f·5 events·first seen 1mo agoAliases: Mistral Vibe, Mistral Vibe 2.0, Mistral Vibe CLI
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Mistral Vibe 2.0: Terminal-Native Coding Agent with Custom Subagents and Devstral 2
Mistral AI has released Mistral Vibe 2.0, a major upgrade to its terminal-native coding agent, powered by the new Devstral 2 model family. Key additions include custom subagents for specialized tasks, multi-choice clarifications before execution, slash-command skills for preconfigured workflows, and unified agent modes. The product is available on Le Chat Pro and Team plans with pay-as-you-go credits, while Devstral 2 moves to paid API access at $0.40/M input and $2.00/M output tokens. Enterprise add-ons include fine-tuning on internal DSLs, reinforcement learning with custom environments, and end-to-end codebase modernization.
Mistral Launches Medium 3.5 (128B Open Weights), Remote Cloud Coding Agents in Vibe, and Work Mode in Le Chat
Mistral AI has released Mistral Medium 3.5, a 128B dense open-weights model with a 256k context window, configurable reasoning effort, and a vision encoder trained from scratch, scoring 77.6% on SWE-Bench Verified. Alongside the model, Mistral is launching remote cloud-based coding agents in its Vibe CLI and Le Chat interface, enabling async parallel coding sessions that run independently and notify users on completion. A new Work mode in Le Chat provides a multi-step agentic interface for cross-tool workflows including email, calendar, research, and issue tracking. Mistral Medium 3.5 replaces Devstral 2 as the default model in both Le Chat and the Vibe CLI, and is available for self-hosting on as few as four GPUs under a modified MIT license.
Mistral Releases Devstral 2 (123B) and Devstral Small 2 (24B) Coding Models Plus Vibe CLI Agent
Mistral AI has released Devstral 2, a 123B-parameter open-weight coding model scoring 72.2% on SWE-bench Verified, and Devstral Small 2, a 24B model scoring 68.0% on the same benchmark and deployable on consumer hardware. Both models support a 256K context window and are permissively licensed (modified MIT and Apache 2.0 respectively). Mistral also launched Vibe CLI, an open-source terminal-based coding agent powered by Devstral that supports multi-file orchestration, natural language code editing, and IDE integration via Agent Communication Protocol. Devstral 2 is currently free via API with post-free pricing of $0.40/$2.00 per million tokens input/output.
Mistral AI Introduces Forge: Enterprise Custom Model Training Platform
Mistral AI has launched Forge, a platform enabling enterprises to build frontier-grade AI models trained on their proprietary internal data, including documentation, codebases, and operational records. Forge supports the full model training lifecycle—pre-training, post-training, and reinforcement learning—across both dense and mixture-of-experts (MoE) architectures, with multimodal input support. The platform is designed to give enterprises strategic autonomy over their AI models and data, with early partners including ASML, Ericsson, the European Space Agency, and DSO National Laboratories Singapore. Forge is also agent-native, allowing autonomous agents like Mistral Vibe to orchestrate fine-tuning, hyperparameter search, and synthetic data generation via natural language.
Mistral Releases Leanstral: First Open-Source Code Agent for Lean 4 Formal Verification
Mistral AI has released Leanstral, an open-source code agent built on a sparse 120B/6B-active-parameter architecture, designed specifically for formal proof engineering in Lean 4. The model targets realistic proof engineering workflows rather than isolated math competition problems, and is benchmarked on FLTEval, a new evaluation suite tied to the Fermat's Last Theorem formalization project. Leanstral is released under Apache 2.0 with a free API endpoint and MCP support, and demonstrates competitive performance against Claude Sonnet 4.6 at roughly 1/15th the cost. The release positions formal verification as a scalable alternative to human code review for high-stakes software and mathematics.