Kimi

Key facts: Kimi is Moonshot AI’s chatbot, famous for a very long context window that lets it read entire books, long reports and large codebases in one conversation and answer questions about them with citations. It supports multiple languages and is popular with researchers, students and analysts who work with long documents.

Plans: Kimi is free to use on the web and mobile, with a paid tier for heavier usage and priority access. The free tier is genuinely useful for everyday document work.

Best for: researchers, students and professionals drowning in PDFs, and anyone who wants cited answers from their own long documents. Watch out: very long inputs can still lose detail in the middle — skim the cited passages for anything critical.

Pros

• A very long context window reads entire books, long reports and large codebases in one conversation.
• Answers come with citations, so claims can be traced back to the source document.
• Supports multiple languages and works on web and mobile.
• The free tier is genuinely useful for everyday document work.

Watch out for

• Very long inputs can still lose detail in the middle; skim the cited passages for anything critical.
• Heavier usage and priority access sit behind a paid tier.
• Citations help, but critical claims still deserve a check against the original text.

Best for

Researchers, students and professionals drowning in PDFs, and anyone who wants cited answers from their own long documents. Who should skip it: users mainly looking for image or video generation rather than document reading.

Pricing

Free to use on the web and mobile, with a paid tier for heavier usage and priority access. Check the official pricing page for current pricing.

FAQs

What makes Kimi different? Its very long context window, which lets it read huge documents and codebases in a single conversation.

Does it cite sources? Yes, it answers questions about your documents with citations you can check.

Is it multilingual? Yes, it supports multiple languages.

Is the free tier enough? For everyday document work, yes; heavier usage needs the paid tier.