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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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TaglineGoogle Docs with an AI collaborator baked in.Spreadsheets with AI + live integrations baked in.Open-source VS Code agent. Reads + writes + runs.Vercel's AI-powered UI generator. Prompt to shadcn component.
CategoryWritingDataCodingDesign
PricingFree + $12/moFree + $19-$89/user/moFree (open source) + your API costsFree + $20/mo
Best forEssays, long-form drafts, thinking on the page.Ops teams, marketers, anyone building dashboards from multiple sources.VS Code users who want agentic coding without changing IDEs.Frontend devs, PMs prototyping UIs, anyone on Next.js.
Strengths
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
Weaknesses
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Best for shadcn stack
  • Iterating can be fiddly
Kai's verdictA-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier. Best free agentic option in VS Code. Use with Claude for best results.S-tier. If you're on Vercel/shadcn, this is cheating.
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