KaiAI tutor for anyone

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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
Cursor
S
ChatGPT Operator
B
Figma AI
A
TaglineGrammar check + tone + AI drafting, everywhere you type.VS Code fork that made AI coding actually work.OpenAI's browser agent. Clicks and types on websites for you.AI features baked into the design tool you already use.
CategoryWritingCodingAgentsDesign
PricingFree + $12-$15/mo Premium + team plansFree + $20/mo Pro + $40/mo BusinessIncluded with ChatGPT Pro $200/moIncluded with Figma plans
Best forNon-native English writers, business email, anyone who types a lot.Developers. Non-developers who want to ship working code.Power users willing to pay $200/mo for a browser bot.Designers already on Figma.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • First drafts with Make Designs
  • Rename/rearrange layers automatically
  • Natural language asset search
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Features vary by plan + region
  • Still rolling out
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.B-tier. Still early. Manus is more flexible for less money.A-tier. No reason not to use it if you're on Figma. Not worth switching for.
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