Leanstral

Leanstral

Mistral AI
+
+

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About

Grok Code Fast 1 is a high-speed, economical reasoning model designed specifically for agentic coding workflows. Unlike traditional models that can feel slow in tool-based loops, it delivers near-instant responses, excelling in everyday software development tasks. Built from scratch with a programming-rich corpus and refined on real-world pull requests, it supports languages like TypeScript, Python, Java, Rust, C++, and Go. Developers can use it for everything from zero-to-one project building to precise bug fixes and codebase Q&A. With optimized inference and caching techniques, it achieves impressive responsiveness and a 90%+ cache hit rate when integrated with partners like GitHub Copilot, Cursor, and Cline. Offered at just $0.20 per million input tokens and $1.50 per million output tokens, Grok Code Fast 1 strikes a strong balance between speed, performance, and affordability.

About

Leanstral is an open-source code agent developed by Mistral AI specifically designed to work with the Lean 4 proof assistant. The model focuses on generating code while also formally verifying its correctness against strict mathematical or software specifications. Unlike traditional coding assistants, Leanstral integrates directly with formal proof systems to ensure that generated code satisfies defined logical requirements. Its architecture is optimized for proof engineering tasks and operates efficiently with sparse model parameters. Leanstral is released under the Apache 2.0 license, making it freely accessible for developers, researchers, and organizations to use and customize. The model is designed to operate within real-world formal repositories rather than isolated problem environments. By combining code generation with formal verification, Leanstral aims to reduce the need for manual human review in complex software and mathematical development.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Grok Code Fast 1 is designed for developers, engineering teams, and coding platform providers who need a fast, cost-effective AI model optimized for real-world software development

Audience

AI researchers, software engineers, and developers working with formal verification, proof assistants, and mathematically rigorous software development

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$0.20 per million input tokens
$0.20 per million input tokens
$1.50 per million output tokens
$0.02 per million cached tokens
Free Version Supported
Free Trial Supported

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

SpaceXAI
Founded: 2023
United States
x.ai

Company Information

Mistral AI
Founded: 2023
France
mistral.ai

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MiMo-V2.6-Pro

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Leanstral 1.5

Leanstral 1.5

Mistral AI

Categories

Agentic AI Supported
AI Coding Agents Supported
AI Coding Models Supported
AI Models Supported

Categories

AI Coding Agents Supported
AI Coding Models Supported
AI Models Supported

Integrations

C# Supported
C++ Supported
Cline Supported
Cursor Supported
Dessix Supported
GitHub Copilot Supported
Go Supported
Grok Supported
JavaScript Supported
Kilo Code Supported
Laravel Supported
Microsoft Foundry Models Supported
Mistral AI Not Supported
OpenCode Supported
OpenRouter Supported
PHP Supported
Python Supported
Roo Code Supported
Rust Supported
Visual Studio Supported

Integrations

C# Not Supported
C++ Not Supported
Cline Not Supported
Cursor Not Supported
Dessix Not Supported
GitHub Copilot Not Supported
Go Not Supported
Grok Not Supported
JavaScript Not Supported
Kilo Code Not Supported
Laravel Not Supported
Microsoft Foundry Models Not Supported
Mistral AI Supported
OpenCode Not Supported
OpenRouter Not Supported
PHP Not Supported
Python Not Supported
Roo Code Not Supported
Rust Not Supported
Visual Studio Not Supported
Claim Grok Code Fast 1 and update features and information
Claim Grok Code Fast 1 and update features and information
Claim Leanstral and update features and information
Claim Leanstral and update features and information