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TaglineAI-powered networked notes. Roam with a brain.Spreadsheets with AI + live integrations baked in.AI research assistant for academic literature.Open-source VS Code agent. Reads + writes + runs.
CategoryProductivityDataResearchCoding
Pricing$10/moFree + $19-$89/user/moFree + $12-$42/moFree (open source) + your API costs
Best forKnowledge workers + thinkers who want AI in their second brain.Ops teams, marketers, anyone building dashboards from multiple sources.Grad students, researchers, anyone doing literature reviews.VS Code users who want agentic coding without changing IDEs.
Strengths
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
Weaknesses
  • Expensive for just notes
  • Smaller community than Obsidian
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Academic-only
  • Can hallucinate citations — verify everything
  • Can burn tokens fast if not watched
  • Less polished than Cursor
Kai's verdictA-tier. Niche but beloved. If you've outgrown Notion, try this.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for academic research. Nothing else comes close for systematic reviews.A-tier. Best free agentic option in VS Code. Use with Claude for best results.
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