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Fathom
S
Claude Agent SDK
S
Elicit
S
Perplexity
S
TaglineMeeting notes, free forever for individuals.Anthropic's SDK for building your own agents on Claude.AI research assistant for academic literature.AI search done right. Cited answers, not chat theater.
CategoryMeetingsAgentsResearchResearch
PricingFree for individuals + $15-$29/user/mo teamsAPI usage + SDK is freeFree + $12-$42/moFree + $20/mo Pro
Best forSolo operators, freelancers, small teams on a budget.Developers building custom agents for their own company/product.Grad students, researchers, anyone doing literature reviews.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
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Bot-joining model
  • Team features gated
  • Developer-only
  • You build the UI
  • Academic-only
  • Can hallucinate citations — verify everything
  • 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 builders. The right primitives. What Kai is built on under the hood.S-tier for academic research. Nothing else comes close for systematic reviews.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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