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Perplexity
S
Gemini
A
Elicit
S
TaglineAI search done right. Cited answers, not chat theater.Google's answer. Best integrated with Workspace + free for a lot.AI research assistant for academic literature.
Categoryresearchchatresearch
PricingFree + $20/mo ProFree + $20/mo Advanced (bundled with 2TB Drive)Free + $12-$42/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Anyone already on Google, research tasks, summarizing long documents.Grad students, researchers, anyone doing literature reviews.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Academic-only
  • Can hallucinate citations — verify everything
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 Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.S-tier for academic research. Nothing else comes close for systematic reviews.
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