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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
Hume AI
A
Luma Dream Machine
A
TaglineCognition Labs' autonomous coding engineer.Voice AI that reads + expresses emotion.Smooth, cinematic motion. Image-to-video specialist.
CategoryAgentsVoiceVideo
Pricing$500/moFree tier + pay-as-you-goFree + $10-$500/mo
Best forEngineering teams offloading tickets. Ops/platform work.Therapy apps, customer service, any voice agent where emotion matters.Photographers animating stills, cinematic b-roll.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Best image-to-video in the category
  • Great camera motion control
  • Ray 2 model produces striking shots
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Niche use case
  • Pricing ramps fast
  • Prompt fidelity below Runway
  • Queue times on free tier
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier in its niche. The only one that actually gets emotion right.A-tier. Best for cinematic image-to-video. Pair with Runway for coverage.
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