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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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Sora
A
HeyGen
S
Devin
A
Perplexity
S
TaglineOpenAI's video model. Long clips, cinematic quality.AI avatar videos. Record once, speak any language.Cognition Labs' autonomous coding engineer.AI search done right. Cited answers, not chat theater.
CategoryVideoVideoAgentsResearch
PricingIncluded with ChatGPT Plus/ProFree + $24-$65/mo$500/moFree + $20/mo Pro
Best forChatGPT subscribers experimenting with cinematic shots.Course creators, multilingual marketers, anyone scaling video content.Engineering teams offloading tickets. Ops/platform work.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • 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
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.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.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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