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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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Replicate
S
Kling
A
Galileo AI
B
Runway
S
TaglineRun any open-source AI model with an API call.Kuaishou's video model. The surprise standout.Prompt to UI design. Figma-ready outputs.The pro's AI video tool. Gen-4 is the current bar.
CategoryDev PlatformVideoDesignVideo
PricingPay per second of computeCredit-based, free trialFree trial + paid plansFree + $15-$95/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Anyone who wants top-tier video quality for less.Designers brainstorming first drafts.Marketing video, pitch decks, b-roll, creative shorts.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Prompt-to-UI with real layouts
  • Exports to Figma
  • Faster than hand-designing from scratch
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • UX is rough for English speakers
  • Queue times
  • Output needs designer polish
  • Pricing unclear / changes often
  • Expensive at scale
  • Still needs post-editing
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.B-tier. Useful for first drafts. v0 is the better bet for shipping code.S-tier. Market leader with reason. Start here for serious video.
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