Leanstral

Leanstral

Mistral AI
Qwen3.5

Qwen3.5

Alibaba
+
+

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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.

About

Qwen3.5 is a next-generation open-weight multimodal large language model designed to power native vision-language agents. The flagship release, Qwen3.5-397B-A17B, combines a hybrid linear attention architecture with sparse mixture-of-experts, activating only 17 billion parameters per forward pass out of 397 billion total to maximize efficiency. It delivers strong benchmark performance across reasoning, coding, multilingual understanding, visual reasoning, and agent-based tasks. The model expands language support from 119 to 201 languages and dialects while introducing a 1M-token context window in its hosted version, Qwen3.5-Plus. Built for multimodal tasks, it processes text, images, and video with advanced spatial reasoning and tool integration. Qwen3.5 also incorporates scalable reinforcement learning environments to improve general agent capabilities. Designed for developers and enterprises, it enables efficient, tool-augmented, multimodal AI workflows.

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

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

Audience

AI researchers, enterprise developers, and organizations seeking an efficient open-weight multimodal foundation model for advanced reasoning, coding, and autonomous agent applications

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

Free
Open source
Free Version
Free Trial

Pricing

Free
Open source
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

Mistral AI
Founded: 2023
France
mistral.ai

Company Information

Alibaba
Founded: 1999
China
qwen.ai

Alternatives

Alternatives

Claude Mythos

Claude Mythos

Anthropic
Claude Opus 4.6

Claude Opus 4.6

Anthropic
Claude Opus 4.5

Claude Opus 4.5

Anthropic
Claude Opus 4.6

Claude Opus 4.6

Anthropic
Leanstral 1.5

Leanstral 1.5

Mistral AI
Qwen3.6-27B

Qwen3.6-27B

Alibaba

Categories

Categories

Integrations

APIFree
Alibaba Cloud Model Studio
Claw Code
Mistral AI
Mistral AI Studio
Mistral Vibe
Ollama
OpenClaw
Qwen
Qwen3.5-Plus
Together AI
ZooClaw

Integrations

APIFree
Alibaba Cloud Model Studio
Claw Code
Mistral AI
Mistral AI Studio
Mistral Vibe
Ollama
OpenClaw
Qwen
Qwen3.5-Plus
Together AI
ZooClaw
Claim Leanstral and update features and information
Claim Leanstral and update features and information
Claim Qwen3.5 and update features and information
Claim Qwen3.5 and update features and information