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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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Perplexity
S
GitHub Copilot
B
Claude
S
Rows
A
TaglineAI search done right. Cited answers, not chat theater.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Anthropic's flagship — best reasoning + longest useful context.Spreadsheets with AI + live integrations baked in.
Categoryresearchcodingchatdata
PricingFree + $20/mo ProFree (limited) + $10/mo Pro + $19/mo BusinessFree + $20/mo Pro + team/enterpriseFree + $19-$89/user/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Teams with GitHub already. Devs who don't want to change IDEs.Long writing, code, careful thinking, documents over 50 pages.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Image generation is weak
  • No native web search on all tiers
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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