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Kimi

by Moonshot AI (China)

From Moonshot AI. Handles very long documents well, making it useful when other tools hit their context limits.

Free + PaidOpen SourceChatbotAI Agent

The details

Context Window
256,000 tokens — large enough for very lengthy research documents and complex coding projects
Cost
Free tier on kimi.com · Paid plans for heavier use.
Open Source?
Yes (Kimi K2 series) — downloadable. ⚠️ Chinese company — be mindful of what you share.
Input / Output
TextImages inVideo (agent mode)

Best for

  • Long document analysis
  • Agentic research tasks
  • Coding projects
  • Multi-step reasoning

Kevin’s take

Made a big splash in 2023 by being one of the first models to handle truly massive documents. The K2 series has continued to impress — especially for coding and research. Perplexity actually uses Kimi K2 to power part of its own Deep Research. That's a meaningful endorsement.

— Kevin, formerly of IT Support

Privacy snapshot

Research FirstPrivacy risk: High

A Chinese AI assistant from Moonshot AI, known for handling very long documents and for strong coding and research.

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