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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Devin
A
Fireflies
A
Fathom
S
TaglineCognition Labs' autonomous coding engineer.Sales-focused meeting AI with CRM integration.Meeting notes, free forever for individuals.
CategoryAgentsMeetingsMeetings
Pricing$500/moFree + $10-$19/user/moFree for individuals + $15-$29/user/mo teams
Best forEngineering teams offloading tickets. Ops/platform work.Sales teams, customer success, anyone running many discovery calls.Solo operators, freelancers, small teams on a budget.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Good CRM integrations (Salesforce, HubSpot)
  • Talk-time + sentiment analytics
  • Call scoring
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Bot-joins (intrusive)
  • Gets expensive at team scale
  • Bot-joining model
  • Team features gated
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier for sales teams. B-tier for solo users.S-tier for solo + free. The best free option, hands down.
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