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What is Leanstral?

Leanstral is an open-source AI coding agent introduced by Mistral AI to support the development of formally verified software and mathematical proofs using Lean 4. The model is specifically designed for proof engineering, allowing it to generate code and automatically verify its correctness against formal specifications. Lean 4 is a powerful proof assistant used in advanced mathematics and software verification, and Leanstral is the first AI agent built specifically to operate within this environment. Instead of relying on general-purpose coding models, Leanstral is trained to work directly with formal repositories and structured proof systems. The model uses a sparse architecture with efficient active parameters, enabling it to deliver strong reasoning performance while maintaining computational efficiency. Leanstral can leverage Lean’s verification capabilities to test and validate generated solutions through parallel inference processes. This approach helps ensure that AI-generated code adheres strictly to defined logical and mathematical requirements. The model supports integration with development tools and model communication protocols, enabling it to function within broader AI-assisted coding environments. Benchmarks demonstrate that Leanstral can outperform many large open-source models in proof engineering tasks while operating at a lower cost. Its design allows developers to automatically generate proofs, verify algorithms, and build mathematically sound software implementations. Released under the Apache 2.0 license, Leanstral can be downloaded, fine-tuned, and deployed in private infrastructure. By combining automated coding with formal verification, Leanstral represents a significant step toward building trustworthy AI systems for critical software and research applications.

What is Alibaba AI Coding Plan?

Alibaba Cloud has introduced its AI Scene Coding initiative, a cloud-focused development platform designed to expedite the software development journey for programmers by leveraging advanced AI coding models. This platform offers access to powerful models like Qwen3-Coder-Plus and integrates effortlessly with popular developer tools such as Cline, Claude Code, Qwen Code, and OpenClaw, allowing engineers to work within their preferred coding environments while harnessing the capabilities of Alibaba Cloud's AI. Aimed at improving the productivity of software development, it combines extensive language models with cloud computing resources, enabling developers to write code, review projects, and automate workflows from a unified interface. These AI models are adept at understanding directives, producing code, debugging applications, and assisting in complex development tasks, significantly reducing the time needed to create applications compared to traditional coding methods. Moreover, this revolutionary approach not only accelerates the development process but also fosters innovation and exploration among developers. By streamlining various aspects of programming, it encourages a more dynamic and creative environment for software creators.

Media

Media

Integrations Supported

Claude Code
Cline
Kimi K2.5
Kimi K2.6
Kimi K2.7 Code
MiniMax M2.5
MiniMax M2.7
MiniMax M3
Mistral AI
Mistral AI Studio
Mistral Vibe
Qwen Code
Qwen3.5-Plus

Integrations Supported

Claude Code
Cline
Kimi K2.5
Kimi K2.6
Kimi K2.7 Code
MiniMax M2.5
MiniMax M2.7
MiniMax M3
Mistral AI
Mistral AI Studio
Mistral Vibe
Qwen Code
Qwen3.5-Plus

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

$3 per month
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Mistral AI

Date Founded

2023

Company Location

France

Company Website

mistral.ai

Company Facts

Organization Name

Alibaba Cloud

Date Founded

2009

Company Location

China

Company Website

www.alibabacloud.com/en/campaign/ai-scene-coding

Categories and Features

Categories and Features

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