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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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Kling
A
ChatGPT Operator
B
Sora
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Replicate
S
TaglineKuaishou's video model. The surprise standout.OpenAI's browser agent. Clicks and types on websites for you.OpenAI's video model. Long clips, cinematic quality.Run any open-source AI model with an API call.
CategoryVideoAgentsVideoDev Platform
PricingCredit-based, free trialIncluded with ChatGPT Pro $200/moIncluded with ChatGPT Plus/ProPay per second of compute
Best forAnyone who wants top-tier video quality for less.Power users willing to pay $200/mo for a browser bot.ChatGPT subscribers experimenting with cinematic shots.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • UX is rough for English speakers
  • Queue times
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.B-tier. Still early. Manus is more flexible for less money.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for open-source model APIs. The default in this space.
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