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TaglineOpen-source VS Code agent. Reads + writes + runs.Vercel's AI-powered UI generator. Prompt to shadcn component.Design + publish sites with AI assists built in.AI search done right. Cited answers, not chat theater.
CategoryCodingDesignDesignResearch
PricingFree (open source) + your API costsFree + $20/moFree + $5-$30/moFree + $20/mo Pro
Best forVS Code users who want agentic coding without changing IDEs.Frontend devs, PMs prototyping UIs, anyone on Next.js.Designers shipping marketing sites without engineers.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • AI generates sections + copy + layouts
  • Designer-first publishing (not just templates)
  • Great animations
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Best for shadcn stack
  • Iterating can be fiddly
  • Less flexible than raw code
  • Pricing per-site adds up
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.S-tier. If you're on Vercel/shadcn, this is cheating.A-tier for designer-led sites. S-tier if animations matter.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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