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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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Grammarly
A
Claude Code
S
Manus
S
Lovable
A
TaglineGrammar check + tone + AI drafting, everywhere you type.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Autonomous AI agent that actually finishes tasks.Build a full app from a prompt. Stripe-ready.
CategoryWritingCodingAgentsDesign
PricingFree + $12-$15/mo Premium + team plansPart of Claude Pro/Max/Team plansFree tier + $39-$199/moFree + $25-$100/mo
Best forNon-native English writers, business email, anyone who types a lot.Developers who want an agent, not autocomplete. Large refactors, tests, docs.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.Non-devs + solopreneurs shipping MVPs.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Complexity ceiling
  • Can generate brittle code
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier in the agent category. The first one I'd give to a non-technical friend.A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.
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