Compare AI tools
Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via
?tools=claude,chatgpt,gemini.Pick tools (4 selected)
coding
image
productivity
writing
marketing
v0 S | GitHub Copilot B | Cursor S | Grammarly A | |
|---|---|---|---|---|
| Tagline | Vercel's AI-powered UI generator. Prompt to shadcn component. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | VS Code fork that made AI coding actually work. | Grammar check + tone + AI drafting, everywhere you type. |
| Category | design | coding | coding | writing |
| Pricing | Free + $20/mo | Free (limited) + $10/mo Pro + $19/mo Business | Free + $20/mo Pro + $40/mo Business | Free + $12-$15/mo Premium + team plans |
| Best for | Frontend devs, PMs prototyping UIs, anyone on Next.js. | Teams with GitHub already. Devs who don't want to change IDEs. | Developers. Non-developers who want to ship working code. | Non-native English writers, business email, anyone who types a lot. |
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| Kai's verdict | 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. | S-tier for coding. If you write code of any kind, this pays back the $20 in a day. | A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone. |
| Link | Open → | Open → | Open → | Open → |