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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
GitHub Copilot
B
Elicit
S
Genspark
A
TaglinePrompt to deployed full-stack app in the browser.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI research assistant for academic literature.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryCodingCodingResearchResearch
PricingFree + $20-$200/moFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$42/moFree + $25/mo Plus
Best forPMs, founders, non-devs shipping MVPs.Teams with GitHub already. Devs who don't want to change IDEs.Grad students, researchers, anyone doing literature reviews.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Academic-only
  • Can hallucinate citations — verify everything
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictA-tier. Best for fast prototypes. Competitive with Lovable — try both.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for academic research. Nothing else comes close for systematic reviews.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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