Leanstral

Leanstral

Mistral AI
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About

GPT-5.2-Codex is OpenAI’s most advanced agentic coding model, built for complex, real-world software engineering and defensive cybersecurity work. It is a specialized version of GPT-5.2 optimized for long-horizon coding tasks such as large refactors, migrations, and feature development. The model maintains full context over extended sessions through native context compaction. GPT-5.2-Codex delivers state-of-the-art performance on benchmarks like SWE-Bench Pro and Terminal-Bench 2.0. It operates reliably across large repositories and native Windows environments. Stronger vision capabilities allow it to interpret screenshots, diagrams, and UI designs during development. GPT-5.2-Codex is designed to be a dependable partner for professional engineering workflows.

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
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

GPT-5.2-Codex is ideal for professional software engineers, security researchers, and development teams working on large-scale codebases, complex refactors, and defensive cybersecurity projects

Audience

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

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

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
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com

Company Information

Mistral AI
Founded: 2023
France
mistral.ai

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Claude Opus 4.6

Anthropic

Categories

Categories

Integrations

C++
ChatGPT Plus
Cursor
EasyClaw
Elixir
GPT-5.2
GPT-5.4 nano
GPT-5.5 Pro
GPT‑5.4 Thinking
JavaScript
Julia
Mistral AI
Mistral AI Studio
Mistral Vibe
OpenAI
PHP
Ruby
Shiori
Visual Basic
Windsurf Editor

Integrations

C++
ChatGPT Plus
Cursor
EasyClaw
Elixir
GPT-5.2
GPT-5.4 nano
GPT-5.5 Pro
GPT‑5.4 Thinking
JavaScript
Julia
Mistral AI
Mistral AI Studio
Mistral Vibe
OpenAI
PHP
Ruby
Shiori
Visual Basic
Windsurf Editor
Claim GPT-5.2-Codex and update features and information
Claim GPT-5.2-Codex and update features and information
Claim Leanstral and update features and information
Claim Leanstral and update features and information