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v0
S
Bolt.new (StackBlitz)
A
Claude Code
S
TaglineVercel's AI-powered UI generator. Prompt to shadcn component.Prompt to deployed full-stack app in the browser.Anthropic's CLI agent. Opus-powered, operates on your repo directly.
CategoryDesignCodingCoding
PricingFree + $20/moFree + $20-$200/moPart of Claude Pro/Max/Team plans
Best forFrontend devs, PMs prototyping UIs, anyone on Next.js.PMs, founders, non-devs shipping MVPs.Developers who want an agent, not autocomplete. Large refactors, tests, docs.
Strengths
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
Weaknesses
  • Best for shadcn stack
  • Iterating can be fiddly
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
Kai's verdictS-tier. If you're on Vercel/shadcn, this is cheating.A-tier. Best for fast prototypes. Competitive with Lovable — try both.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.
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