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Perplexity
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Aider
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Cursor
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Claude Code
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TaglineAI search done right. Cited answers, not chat theater.Terminal-based AI pair programmer. Git-aware, model-flexible.VS Code fork that made AI coding actually work.Anthropic's CLI agent. Opus-powered, operates on your repo directly.
Categoryresearchcodingcodingcoding
PricingFree + $20/mo ProFree (open source) + whatever API you useFree + $20/mo Pro + $40/mo BusinessPart of Claude Pro/Max/Team plans
Best forReplacing Google for any question where you want a cited answer in seconds.Developers who want open-source tooling with full control.Developers. Non-developers who want to ship working code.Developers who want an agent, not autocomplete. Large refactors, tests, docs.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
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. The right answer if you want open-source + terminal-native + model-agnostic.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.
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