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TaglineRun any open-source AI model with an API call.AI-powered networked notes. Roam with a brain.VS Code fork that made AI coding actually work.The default. Strongest ecosystem + best multimodal breadth.
Categorydev platformproductivitycodingchat
PricingPay per second of compute$10/moFree + $20/mo Pro + $40/mo BusinessFree + $20/mo Plus + $200/mo Pro
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Knowledge workers + thinkers who want AI in their second brain.Developers. Non-developers who want to ship working code.General use, voice chat, image generation, first-time AI users.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Expensive for just notes
  • Smaller community than Obsidian
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. Niche but beloved. If you've outgrown Notion, try this.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it.
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