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TaglineAI-powered networked notes. Roam with a brain.Open-source VS Code agent. Reads + writes + runs.Voice AI that reads + expresses emotion.AI search done right. Cited answers, not chat theater.
CategoryProductivityCodingVoiceResearch
Pricing$10/moFree (open source) + your API costsFree tier + pay-as-you-goFree + $20/mo Pro
Best forKnowledge workers + thinkers who want AI in their second brain.VS Code users who want agentic coding without changing IDEs.Therapy apps, customer service, any voice agent where emotion matters.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Expensive for just notes
  • Smaller community than Obsidian
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Niche use case
  • Pricing ramps fast
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. Niche but beloved. If you've outgrown Notion, try this.A-tier. Best free agentic option in VS Code. Use with Claude for best results.A-tier in its niche. The only one that actually gets emotion right.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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