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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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Rows
A
Perplexity
S
Grammarly
A
Devin
A
TaglineSpreadsheets with AI + live integrations baked in.AI search done right. Cited answers, not chat theater.Grammar check + tone + AI drafting, everywhere you type.Cognition Labs' autonomous coding engineer.
CategoryDataResearchWritingAgents
PricingFree + $19-$89/user/moFree + $20/mo ProFree + $12-$15/mo Premium + team plans$500/mo
Best forOps teams, marketers, anyone building dashboards from multiple sources.Replacing Google for any question where you want a cited answer in seconds.Non-native English writers, business email, anyone who types a lot.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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