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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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Bolt.new (StackBlitz)
A
Genspark
A
Claude Code
S
Perplexity
S
TaglinePrompt to deployed full-stack app in the browser.AI agent for deep search. Generates Sparkpages — full mini-reports.Anthropic's CLI agent. Opus-powered, operates on your repo directly.AI search done right. Cited answers, not chat theater.
CategoryCodingResearchCodingResearch
PricingFree + $20-$200/moFree + $25/mo PlusPart of Claude Pro/Max/Team plansFree + $20/mo Pro
Best forPMs, founders, non-devs shipping MVPs.Travel planning, shopping comparisons, deep research where you want an artifact back.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. Best for fast prototypes. Competitive with Lovable — try both.A-tier. Bet on this one — the Sparkpage format is genuinely new.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.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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