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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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GitHub Copilot
B
Writesonic
B
Bolt.new (StackBlitz)
A
Perplexity
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.SEO-first AI writer. Optimized for ranking content.Prompt to deployed full-stack app in the browser.AI search done right. Cited answers, not chat theater.
Categorycodingmarketingcodingresearch
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $15-$99/moFree + $20-$200/moFree + $20/mo Pro
Best forTeams with GitHub already. Devs who don't want to change IDEs.Content marketers churning out SEO articles.PMs, founders, non-devs shipping MVPs.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.B-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.A-tier. Best for fast prototypes. Competitive with Lovable — try both.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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