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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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Rows
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Hume AI
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Fireflies
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Devin
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TaglineSpreadsheets with AI + live integrations baked in.Voice AI that reads + expresses emotion.Sales-focused meeting AI with CRM integration.Cognition Labs' autonomous coding engineer.
CategoryDataVoiceMeetingsAgents
PricingFree + $19-$89/user/moFree tier + pay-as-you-goFree + $10-$19/user/mo$500/mo
Best forOps teams, marketers, anyone building dashboards from multiple sources.Therapy apps, customer service, any voice agent where emotion matters.Sales teams, customer success, anyone running many discovery calls.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Good CRM integrations (Salesforce, HubSpot)
  • Talk-time + sentiment analytics
  • Call scoring
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Niche use case
  • Pricing ramps fast
  • Bot-joins (intrusive)
  • Gets expensive at team scale
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier in its niche. The only one that actually gets emotion right.A-tier for sales teams. B-tier for solo users.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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