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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
Devin
A
Grammarly
A
ChatGPT Operator
B
TaglineSpreadsheets with AI + live integrations baked in.Cognition Labs' autonomous coding engineer.Grammar check + tone + AI drafting, everywhere you type.OpenAI's browser agent. Clicks and types on websites for you.
Categorydataagentswritingagents
PricingFree + $19-$89/user/mo$500/moFree + $12-$15/mo Premium + team plansIncluded with ChatGPT Pro $200/mo
Best forOps teams, marketers, anyone building dashboards from multiple sources.Engineering teams offloading tickets. Ops/platform work.Non-native English writers, business email, anyone who types a lot.Power users willing to pay $200/mo for a browser bot.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.B-tier. Still early. Manus is more flexible for less money.
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