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What is Kimi?
Kimi is Moonshot AI's assistant, known for very long context windows and strong performance on research, writing, and reasoning tasks. Beyond the core chat assistant, Moonshot ships a growing suite of Kimi products — Kimi Work (a desktop agent), Kimi Code (a coding agent), and an open-weight model line (Kimi K2/K3) that developers can run themselves.
Key features
- Very long context window for reasoning over large documents or codebases
- Deep research mode that browses the web and synthesizes cited answers
- Kimi Work: a desktop agent that can operate local files and the open web
- Kimi Code: an agentic coding assistant for terminal and IDE workflows
- Open-weight Kimi K2/K3 models available for self-hosting
- Slides, docs, and sheets generation built into the assistant
How to get started
- Go to kimi.com and start a chat for free
- Paste a long document or codebase and ask questions across all of it
- Turn on Deep Research for multi-step, cited web research
- Install Kimi Code in your terminal/IDE for coding-agent workflows
- Use the Kimi open platform API for programmatic access to the models
Use cases
- Summarizing and querying very long documents or reports
- Multi-step research tasks that need cited web sources
- Agentic coding help directly in a terminal or IDE
- Generating slides or docs from a prompt
- Self-hosting an open-weight model for custom applications
Kimi vs. alternatives
| Tool | How it compares |
|---|---|
| Kimi | A long-context AI assistant from Moonshot AI, built for deep research, writing, and agentic tasks. |
| DeepSeek | similarly strong reasoning, different product focus |
| Qwen | broader multilingual and multimodal support |
| Claude | more mature agentic coding tooling |
FAQ
Is Kimi free to use?
Kimi's plans: Free to use, with paid plans for higher limits on Kimi's agent and coding products. Pricing and free-tier limits change over time, so check the official site above for the latest details.
What is Kimi used for?
A long-context AI assistant from Moonshot AI, built for deep research, writing, and agentic tasks.
Who is Kimi best for?
Kimi is a good fit for summarizing and querying very long documents or reports, or multi-step research tasks that need cited web sources.
What are the alternatives to Kimi?
Commonly compared alternatives include DeepSeek, Qwen, and Claude, see the comparison above for how they differ.
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CLast reviewed: 2026-08 · Reviewed by AIKetra editors · How we evaluate tools