Kimi K2

Kimi K2

Moonshot AI
Kimi K3.1 Pro

Kimi K3.1 Pro

Moonshot 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

Kimi K3.1 Pro is a multimodal large language model developed by Moonshot AI for advanced reasoning, software development, 3D modeling, financial analysis, and autonomous AI agent workflows. The model uses a mixture-of-experts architecture with approximately 2.8 trillion total parameters and 104 billion active parameters, supporting a context window of one million tokens. Its coding capabilities include debugging existing applications, generating complete software projects, developing interactive websites, and creating applications with game engines. Kimi K3.1 Pro can analyze images, interpret spatial relationships, generate CAD scripts, and create three-dimensional assets from text descriptions or visual references. Its reasoning and tool-use capabilities support financial modeling, investment research, document analysis, and multistep business workflows. The model is available through Kimi's web and mobile applications, Kimi Work, Kimi Code, and the Kimi API, with a Highspeed variant.

Platforms Supported

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

Platforms Supported

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

Audience

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

Audience

Software developers, AI engineers, researchers, financial analysts, and teams building applications or agentic workflows with AI models.

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 Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Pricing

$2 per 1M tokens
API usage is pay-as-you-go: $2 per million input tokens and $10 per million output tokens. Cached input is $0.20 per million tokens; cache writes are $2 per million tokens. Kimi Code also provides tier-based membership access, with quotas and context limits depending on the tier.
Free Version Not 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 5.0 / 5
ease 5.0 / 5

Pros & Cons from Real Users

Pros

  • I can give it a large coding job, a research project, or a multi-step agent workflow and it does a much better job staying organized all the way through. Coding is probably the biggest jump. Moonshot reports a 65.7% score on Terminal-Bench 4.0, ahead of GPT-6 Astra’s reported 58.2% and just behind Claude Opus 5.5 at 66.4%. It feels especially good for terminal work, repo-level changes, and tasks where the agent has to keep using tools for a while. The 1M-token context window is also genuinely useful. I can keep a huge amount of source code, documentation, financial material, screenshots, and prior work in context without constantly trimming things down.

Cons

  • The main downside is that the full weights are not available yet. Moonshot says they will be released soon, so the open-weight story is promising, but I would wait for that release before judging local deployment and customization.

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

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

Company Information

Moonshot AI
Founded: 2023
China
www.kimi.ai/

Alternatives

Claude Code

Claude Code

Anthropic

Alternatives

Claude Opus 4.5

Claude Opus 4.5

Anthropic
GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
Kimi K3.1 Pro

Kimi K3.1 Pro

Moonshot AI
Kimi K2

Kimi K2

Moonshot AI
Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
Kimi K3

Kimi K3

Moonshot AI

Categories

Categories

Integrations

AiAssistWorks Supported
Brokk Supported
EaseMate AI Supported
Kimi Supported
NVIDIA TensorRT Supported
Nebius Token Factory Supported
Okara Supported
OpenClaw Supported
OpenCode Supported
PrivatClaw Supported
Shiori Supported
SiliconFlow Supported
Augment Code Not Supported
C Not Supported
Kimi Code CLI Not Supported
Kimi Work Not Supported
PenguinBot Supported
Tailwind CSS Not Supported
TypeScript Not Supported
Use AI Supported

Integrations

AiAssistWorks Supported
Brokk Supported
EaseMate AI Supported
Kimi Supported
NVIDIA TensorRT Supported
Nebius Token Factory Supported
Okara Supported
OpenClaw Supported
OpenCode Supported
PrivatClaw Supported
Shiori Supported
SiliconFlow Supported
Augment Code Supported
C Supported
Kimi Code CLI Supported
Kimi Work Supported
PenguinBot Not Supported
Tailwind CSS Supported
TypeScript Supported
Use AI Not Supported
Claim Kimi K2 and update features and information
Claim Kimi K2 and update features and information
Claim Kimi K3.1 Pro and update features and information
Claim Kimi K3.1 Pro and update features and information