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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
Lovable
A
Ideogram
S
Devin
A
TaglineGrammar check + tone + AI drafting, everywhere you type.Build a full app from a prompt. Stripe-ready.The one that actually gets text in images right.Cognition Labs' autonomous coding engineer.
CategoryWritingDesignImageAgents
PricingFree + $12-$15/mo Premium + team plansFree + $25-$100/moFree + $8/mo + $20/mo + $60/mo$500/mo
Best forNon-native English writers, business email, anyone who types a lot.Non-devs + solopreneurs shipping MVPs.Anything with text — posters, ads, album covers, slide decks.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Complexity ceiling
  • Can generate brittle code
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.S-tier for text-in-image. Use this for posters, Midjourney for art.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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