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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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Cursor
S
v0
S
Genspark
A
Perplexity
S
TaglineVS Code fork that made AI coding actually work.Vercel's AI-powered UI generator. Prompt to shadcn component.AI agent for deep search. Generates Sparkpages — full mini-reports.AI search done right. Cited answers, not chat theater.
CategoryCodingDesignResearchResearch
PricingFree + $20/mo Pro + $40/mo BusinessFree + $20/moFree + $25/mo PlusFree + $20/mo Pro
Best forDevelopers. Non-developers who want to ship working code.Frontend devs, PMs prototyping UIs, anyone on Next.js.Travel planning, shopping comparisons, deep research where you want an artifact back.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Best for shadcn stack
  • Iterating can be fiddly
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier. If you're on Vercel/shadcn, this is cheating.A-tier. Bet on this one — the Sparkpage format is genuinely new.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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