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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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Dev Platform
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Rows
A
Manus
S
Grammarly
A
Aider
A
TaglineSpreadsheets with AI + live integrations baked in.Autonomous AI agent that actually finishes tasks.Grammar check + tone + AI drafting, everywhere you type.Terminal-based AI pair programmer. Git-aware, model-flexible.
CategoryDataAgentsWritingCoding
PricingFree + $19-$89/user/moFree tier + $39-$199/moFree + $12-$15/mo Premium + team plansFree (open source) + whatever API you use
Best forOps teams, marketers, anyone building dashboards from multiple sources.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.Non-native English writers, business email, anyone who types a lot.Developers who want open-source tooling with full control.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier in the agent category. The first one I'd give to a non-technical friend.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
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