Kimi K2

Kimi K2

Moonshot AI
Leanstral 1.5

Leanstral 1.5

Mistral AI
+
+

Related Products

  • LM-Kit.NET
    29 Ratings
    Visit Website
  • DAT
    323 Ratings
    Visit Website
  • InEight
    136 Ratings
    Visit Website
  • Dragonfly
    16 Ratings
    Visit Website
  • Juspay
    17 Ratings
    Visit Website
  • Apify
    1,441 Ratings
    Visit Website
  • Checksum.ai
    1 Rating
    Visit Website
  • Daylight
    10 Ratings
    Visit Website
  • Gemini Enterprise Agent Platform
    983 Ratings
    Visit Website
  • TrustInSoft Analyzer
    6 Ratings
    Visit Website

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 1.5 is an Apache-2.0 licensed model for practical proof engineering in Lean 4, built to make formal verification more powerful and accessible. With 119B total parameters and only 6B active parameters, it delivers a major performance upgrade for theorem proving, agentic proof engineering, and real-world code verification. Leanstral 1.5 was trained through a three-stage process: mid-training, supervised fine-tuning, and reinforcement learning with CISPO. In the multiturn environment, the model receives a theorem statement, submits a proof, gets Lean compiler feedback, and refines its approach until the proof compiles or the budget is exhausted. In the code agent environment, Leanstral works like a developer in a raw filesystem: it edits files, runs bash commands, and uses the Lean language server to inspect goals, errors, and type information in real time.

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

Formal methods engineers and Lean 4 researchers who need an open model for theorem proving, proof debugging, and real-world code verification

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
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

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

Company Information

Mistral AI
Founded: 2023
France
mistral.ai/news/leanstral-1-5/

Alternatives

Claude Code

Claude Code

Anthropic

Alternatives

Leanstral

Leanstral

Mistral AI
Claude Opus 4.5

Claude Opus 4.5

Anthropic
DeepSWE

DeepSWE

Agentica Project
Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
SWE-1.5

SWE-1.5

Cognition
Kimi K2.7 Code

Kimi K2.7 Code

Moonshot AI
Command R+

Command R+

Cohere AI

Categories

Categories

Integrations

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

Integrations

AiAssistWorks
Brokk
EaseMate AI
Kimi
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 1.5 and update features and information
Claim Leanstral 1.5 and update features and information