Kimi K2

Kimi K2

Moonshot AI
Leanstral

Leanstral

Mistral AI
+
+

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About

Kimi K2 is a state-of-the-art open source large language model series built on a mixture-of-experts (MoE) architecture, featuring 1 trillion total parameters and 32 billion activated parameters for task-specific efficiency. Trained with the Muon optimizer on over 15.5 trillion tokens and stabilized by MuonClip’s attention-logit clamping, it delivers exceptional performance in frontier knowledge, reasoning, mathematics, coding, and general agentic workflows. Moonshot AI provides two variants, Kimi-K2-Base for research-level fine-tuning and Kimi-K2-Instruct pre-trained for immediate chat and tool-driven interactions, enabling both custom development and drop-in agentic capabilities. Benchmarks show it outperforms leading open source peers and rivals top proprietary models in coding tasks and complex task breakdowns, while its 128 K-token context length, tool-calling API compatibility, and support for industry-standard inference engines.

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

AI researchers, developers and organizations seeking an open source, high-performance agentic intelligence model for advanced reasoning, coding and autonomous task execution

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

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

Moonshot AI
Founded: 2023
China
moonshotai.github.io/Kimi-K2/

Company Information

Mistral AI
Founded: 2023
France
mistral.ai

Alternatives

Claude Code

Claude Code

Anthropic

Alternatives

Claude Opus 4.5

Claude Opus 4.5

Anthropic
Claude Opus 4.6

Claude Opus 4.6

Anthropic
Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
Leanstral 1.5

Leanstral 1.5

Mistral AI
Kimi K3

Kimi K3

Moonshot AI

Categories

Categories

Integrations

AiAssistWorks
Brokk
EaseMate AI
Kimi
Mistral AI
Mistral AI Studio
Mistral Vibe
NVIDIA TensorRT
Nebius Token Factory
Okara
OpenClaw
OpenCode
PenguinBot
PrivatClaw
Shiori
SiliconFlow
Simtheory
Use AI

Integrations

AiAssistWorks
Brokk
EaseMate AI
Kimi
Mistral AI
Mistral AI Studio
Mistral Vibe
NVIDIA TensorRT
Nebius Token Factory
Okara
OpenClaw
OpenCode
PenguinBot
PrivatClaw
Shiori
SiliconFlow
Simtheory
Use AI
Claim Kimi K2 and update features and information
Claim Kimi K2 and update features and information
Claim Leanstral and update features and information
Claim Leanstral and update features and information