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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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TaglineAI-powered networked notes. Roam with a brain.Open-source VS Code agent. Reads + writes + runs.Vector + raster AI for designers. Actually controls the output.Spreadsheets with AI + live integrations baked in.
CategoryProductivityCodingImageData
Pricing$10/moFree (open source) + your API costsFree + $12-$48/moFree + $19-$89/user/mo
Best forKnowledge workers + thinkers who want AI in their second brain.VS Code users who want agentic coding without changing IDEs.Designers, brand teams, anyone needing vector output or tight style control.Ops teams, marketers, anyone building dashboards from multiple sources.
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
  • Exports SVG vectors — rare in AI image gen
  • Strong style control + consistency
  • Brand kit for consistent outputs
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Expensive for just notes
  • Smaller community than Obsidian
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Less hyped than Midjourney
  • Learning curve for non-designers
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
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.S-tier for designers. The only one that takes vectors seriously.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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