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Aider
A
Perplexity
S
TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.AI search done right. Cited answers, not chat theater.
Categorycodingresearch
PricingFree (open source) + whatever API you useFree + $20/mo Pro
Best forDevelopers who want open-source tooling with full control.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.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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