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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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Chatbots
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Coding
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Grammarly
A
v0
S
GitHub Copilot
B
Grok
A
TaglineGrammar check + tone + AI drafting, everywhere you type.Vercel's AI-powered UI generator. Prompt to shadcn component.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.xAI's chatbot. Real-time X/Twitter data + fewer refusals.
CategoryWritingDesignCodingChatbots
PricingFree + $12-$15/mo Premium + team plansFree + $20/moFree (limited) + $10/mo Pro + $19/mo BusinessFree + $30/mo SuperGrok + included with X Premium
Best forNon-native English writers, business email, anyone who types a lot.Frontend devs, PMs prototyping UIs, anyone on Next.js.Teams with GitHub already. Devs who don't want to change IDEs.Breaking news, live event tracking, users already on X.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Best for shadcn stack
  • Iterating can be fiddly
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
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're on Vercel/shadcn, this is cheating.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for real-time. B-tier for everything else. Worth checking when news breaks.
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