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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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v0
S
Claude
S
Gemini
A
TaglineVercel's AI-powered UI generator. Prompt to shadcn component.Anthropic's flagship — best reasoning + longest useful context.Google's answer. Best integrated with Workspace + free for a lot.
CategoryDesignChatbotsChatbots
PricingFree + $20/moFree + $20/mo Pro + team/enterpriseFree + $20/mo Advanced (bundled with 2TB Drive)
Best forFrontend devs, PMs prototyping UIs, anyone on Next.js.Long writing, code, careful thinking, documents over 50 pages.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Best for shadcn stack
  • Iterating can be fiddly
  • Image generation is weak
  • No native web search on all tiers
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictS-tier. If you're on Vercel/shadcn, this is cheating.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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