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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
Genspark
A
Perplexity
S
Replit Agent
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI agent for deep search. Generates Sparkpages — full mini-reports.AI search done right. Cited answers, not chat theater.Replit's AI that builds + deploys full apps on their platform.
Categorycodingresearchresearchcoding
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $25/mo PlusFree + $20/mo Pro$10-$25/mo Core/Teams
Best forTeams with GitHub already. Devs who don't want to change IDEs.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.Teachers, students, prototypers, hackathon builders.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • 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
  • Full-stack + DB + auth + deploy in one environment
  • Great for teaching/learning
  • Runs everything in-browser
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Locked into Replit hosting
  • Less code quality than dedicated IDEs
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.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.A-tier. Best for teaching a kid to code in 2026.
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