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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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HeyGen
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Devin
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TaglineSpreadsheets with AI + live integrations baked in.The pro's AI video tool. Gen-4 is the current bar.AI avatar videos. Record once, speak any language.Cognition Labs' autonomous coding engineer.
CategoryDataVideoVideoAgents
PricingFree + $19-$89/user/moFree + $15-$95/moFree + $24-$65/mo$500/mo
Best forOps teams, marketers, anyone building dashboards from multiple sources.Marketing video, pitch decks, b-roll, creative shorts.Course creators, multilingual marketers, anyone scaling video content.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
  • 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
  • Expensive at scale
  • Still needs post-editing
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictA-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier. Market leader with reason. Start here for serious video.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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