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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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DeepSeek
S
v0
S
Cursor
S
Grok
A
TaglineChinese open-weight powerhouse. Crazy cheap, genuinely smart.Vercel's AI-powered UI generator. Prompt to shadcn component.VS Code fork that made AI coding actually work.xAI's chatbot. Real-time X/Twitter data + fewer refusals.
CategoryChatbotsDesignCodingChatbots
PricingFree web + ultra-cheap API (~$0.14/M input tokens)Free + $20/moFree + $20/mo Pro + $40/mo BusinessFree + $30/mo SuperGrok + included with X Premium
Best forDevelopers + cost-conscious builders. Anyone fine with self-hosting.Frontend devs, PMs prototyping UIs, anyone on Next.js.Developers. Non-developers who want to ship working code.Breaking news, live event tracking, users already on X.
Strengths
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
Weaknesses
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Best for shadcn stack
  • Iterating can be fiddly
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
Kai's verdictS-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.S-tier. If you're on Vercel/shadcn, this is cheating.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier for real-time. B-tier for everything else. Worth checking when news breaks.
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