Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
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About

Grok 4.1 Fast is the newest xAI model designed to deliver advanced tool-calling capabilities with a massive 2-million-token context window. It excels at complex real-world tasks such as customer support, finance, troubleshooting, and dynamic agent workflows. The model pairs seamlessly with the new Agent Tools API, which enables real-time web search, X search, file retrieval, and secure code execution. This combination gives developers the power to build fully autonomous, production-grade agents that plan, reason, and use tools effectively. Grok 4.1 Fast is trained with long-horizon reinforcement learning, ensuring stable multi-turn accuracy even across extremely long prompts. With its speed, cost-efficiency, and high benchmark scores, it sets a new standard for scalable enterprise-grade AI agents.

About

Kimi K2 Thinking is an advanced open source reasoning model developed by Moonshot AI, designed specifically for long-horizon, multi-step workflows where the system interleaves chain-of-thought processes with tool invocation across hundreds of sequential tasks. The model uses a mixture-of-experts architecture with a total of 1 trillion parameters, yet only about 32 billion parameters are activated per inference pass, optimizing efficiency while maintaining vast capacity. It supports a context window of up to 256,000 tokens, enabling the handling of extremely long inputs and reasoning chains without losing coherence. Native INT4 quantization is built in, which reduces inference latency and memory usage without performance degradation. Kimi K2 Thinking is explicitly built for agentic workflows; it can autonomously call external tools, manage sequential logic steps (up to and typically between 200-300 tool calls in a single chain), and maintain consistent reasoning.

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

This content is ideal for developers, enterprises, and technical teams seeking to build advanced AI agents that require real-time data access, long-context reasoning, and reliable tool-calling capabilities

Audience

Developers and AI research teams seeking a solution for building autonomous agents, multi-step reasoning systems and tool-enabled workflows

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 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

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:

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Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

xAI
Founded: 2023
United States
grok.com

Company Information

Moonshot AI
Founded: 2023
United States
moonshotai.github.io/Kimi-K2/thinking.html

Alternatives

Alternatives

Claude Opus 4.5

Claude Opus 4.5

Anthropic
Claude Opus 4.6

Claude Opus 4.6

Anthropic
MiniMax-M2.1

MiniMax-M2.1

MiniMax
Kimi K2

Kimi K2

Moonshot AI
GLM-5

GLM-5

Zhipu AI
GLM-5.1

GLM-5.1

Zhipu AI

Categories

Categories

Integrations

Zo Computer
C
Clawd.run
Clojure
FastRouter
GPT-5
GPT-5.1 Pro
GPT-5.2
GPT-5.2 Pro
GPT-5.4
GPT-5.4 Pro
Go
Julia
LaunchLemonade
Nebius Token Factory
OpenRouter
SQL
Scala
TypeScript
Visual Basic

Integrations

Zo Computer
C
Clawd.run
Clojure
FastRouter
GPT-5
GPT-5.1 Pro
GPT-5.2
GPT-5.2 Pro
GPT-5.4
GPT-5.4 Pro
Go
Julia
LaunchLemonade
Nebius Token Factory
OpenRouter
SQL
Scala
TypeScript
Visual Basic
Claim Grok 4.1 Fast and update features and information
Claim Grok 4.1 Fast and update features and information
Claim Kimi K2 Thinking and update features and information
Claim Kimi K2 Thinking and update features and information