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Cursor
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Perplexity
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Elicit
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Devin
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TaglineVS Code fork that made AI coding actually work.AI search done right. Cited answers, not chat theater.AI research assistant for academic literature.Cognition Labs' autonomous coding engineer.
Categorycodingresearchresearchagents
PricingFree + $20/mo Pro + $40/mo BusinessFree + $20/mo ProFree + $12-$42/mo$500/mo
Best forDevelopers. Non-developers who want to ship working code.Replacing Google for any question where you want a cited answer in seconds.Grad students, researchers, anyone doing literature reviews.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Academic-only
  • Can hallucinate citations — verify everything
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for academic research. Nothing else comes close for systematic reviews.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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