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Fathom
S
Elicit
S
Claude Agent SDK
S
Perplexity
S
TaglineMeeting notes, free forever for individuals.AI research assistant for academic literature.Anthropic's SDK for building your own agents on Claude.AI search done right. Cited answers, not chat theater.
CategoryMeetingsResearchAgentsResearch
PricingFree for individuals + $15-$29/user/mo teamsFree + $12-$42/moAPI usage + SDK is freeFree + $20/mo Pro
Best forSolo operators, freelancers, small teams on a budget.Grad students, researchers, anyone doing literature reviews.Developers building custom agents for their own company/product.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Bot-joining model
  • Team features gated
  • Academic-only
  • Can hallucinate citations — verify everything
  • Developer-only
  • You build the UI
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for solo + free. The best free option, hands down.S-tier for academic research. Nothing else comes close for systematic reviews.S-tier for builders. The right primitives. What Kai is built on under the hood.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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