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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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Devin
A
Cursor
S
Ideogram
S
Grammarly
A
TaglineCognition Labs' autonomous coding engineer.VS Code fork that made AI coding actually work.The one that actually gets text in images right.Grammar check + tone + AI drafting, everywhere you type.
Categoryagentscodingimagewriting
Pricing$500/moFree + $20/mo Pro + $40/mo BusinessFree + $8/mo + $20/mo + $60/moFree + $12-$15/mo Premium + team plans
Best forEngineering teams offloading tickets. Ops/platform work.Developers. Non-developers who want to ship working code.Anything with text — posters, ads, album covers, slide decks.Non-native English writers, business email, anyone who types a lot.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for text-in-image. Use this for posters, Midjourney for art.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.
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