Kimi
FreemiumMastering massive documents with long context.
Kimi is an AI-powered assistant developed by Moonshot AI that excels at long-context tasks, multi-step reasoning, and autonomous agent execution. With a 262,144-token context window, it handles massive documents, complex codebases, and extensive research workflows in a single conversation. Kimi offers specialized agents for coding, spreadsheets, documents, web automation, and deep research, alongside a free tier with generous usage limits.

What is it
Kimi is an AI assistant developed by Moonshot AI, featuring industry-leading long-context processing and autonomous agent capabilities. It focuses on handling massive amounts of information and complex professional tasks through specialized agents for coding, research, documents, and web automation.
What it can do
It processes up to 262,144 tokens in a single prompt, enabling deep analysis of long documents and codebases. Kimi excels at multi-step research with up to 300 tool calls, automated software development, spreadsheet creation, document workflows, and web automation through tools like Kimi Code, Agent Swarm, and Kimi Claw.
Who is it for
It is the premier choice for developers, researchers, legal professionals, financial analysts, and business teams who need to analyze large volumes of text, automate complex workflows, or perform deep, reasoned research.
Key Features
Massive Context Window
Process and understand massive documents with a context window of up to 262,144 tokens. Kimi's K2.6 model handles long academic papers, complex legal contracts, and extensive codebases in a single conversation, enabling deep analysis and accurate information retrieval for researchers and professional analysts.
Deep Research Agent
Leverage the K2 Thinking model's reasoning capability and up to 300-step tool calling for complex, multi-step research tasks. Kimi acts as an expert-level research assistant supporting strategic research, competitive analysis, and financial data investigation, breaking down complex queries into sub-questions for thorough investigation.
Agent Swarm
Deploy multiple AI agents working in parallel to handle complex, multi-faceted tasks. Available on Allegretto and higher plans, Agent Swarm coordinates concurrent sub-agents (up to 8 on Vivace) to automate research, data analysis, and content generation workflows simultaneously.
Kimi Code
Built for complex software automation with Kimi K2's instruction following and logical reasoning capabilities. Kimi Code handles debugging, refactoring, and multi-step development workflows with high precision, supporting a wide range of programming languages and technical stacks for developers.
Use Cases
Long document analysis for researchers
Researchers and academics upload entire books, long papers, or complex legal contracts to Kimi for comprehensive analysis. The 262,144-token context window allows for deep reading and cross-referencing within massive documents without losing coherence.
Strategic competitive analysis
Business analysts use Kimi's Deep Research agent to conduct multi-step investigations into competitors, market trends, and pricing strategies. The 300-step tool calling capability ensures thorough coverage of complex research questions with cited, verifiable results.
Automated software development
Developers leverage Kimi Code for debugging, refactoring, and multi-step development workflows. The K2.6 model's enhanced coding stability and agentic capabilities handle complex programming tasks across multiple languages, significantly accelerating R&D cycles.
Legal document review and drafting
Legal professionals use Kimi for automated contract review, patent analysis, and complex document drafting. The model's rigorous attention to detail and terminology adherence makes it ideal for high-stakes legal workflows requiring strict logical structures.
Pricing plans
Frequently Asked Questions
Discussion
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