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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
Grok
A
Claude Code
S
GitHub Copilot
B
TaglineAI search done right. Cited answers, not chat theater.xAI's chatbot. Real-time X/Twitter data + fewer refusals.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.
Categoryresearchchatcodingcoding
PricingFree + $20/mo ProFree + $30/mo SuperGrok + included with X PremiumPart of Claude Pro/Max/Team plansFree (limited) + $10/mo Pro + $19/mo Business
Best forReplacing Google for any question where you want a cited answer in seconds.Breaking news, live event tracking, users already on X.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Teams with GitHub already. Devs who don't want to change IDEs.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Less agentic than Cursor/Claude Code
  • Model quality varies
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier for real-time. B-tier for everything else. Worth checking when news breaks.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.
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