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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
Sora
A
MagicSchool
S
HeyGen
S
TaglineCognition Labs' autonomous coding engineer.OpenAI's video model. Long clips, cinematic quality.AI platform built for teachers. Lesson plans + IEPs + admin.AI avatar videos. Record once, speak any language.
CategoryAgentsVideoEducationVideo
Pricing$500/moIncluded with ChatGPT Plus/ProFree + $100/yr Plus + school plansFree + $24-$65/mo
Best forEngineering teams offloading tickets. Ops/platform work.ChatGPT subscribers experimenting with cinematic shots.Teachers prepping materials. School districts.Course creators, multilingual marketers, anyone scaling video content.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Teacher-only focus
  • Less useful for students
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for teachers. If you teach K-12, start here this week.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
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