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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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Dev Platform
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Replicate
S
Runway
S
Galileo AI
B
Gamma
A
TaglineRun any open-source AI model with an API call.The pro's AI video tool. Gen-4 is the current bar.Prompt to UI design. Figma-ready outputs.AI slide decks that don't look AI-generated.
CategoryDev PlatformVideoDesignProductivity
PricingPay per second of computeFree + $15-$95/moFree trial + paid plansFree + $10-$20/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Marketing video, pitch decks, b-roll, creative shorts.Designers brainstorming first drafts.Pitch decks, proposals, internal presentations — fast.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Prompt-to-UI with real layouts
  • Exports to Figma
  • Faster than hand-designing from scratch
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Expensive at scale
  • Still needs post-editing
  • Output needs designer polish
  • Pricing unclear / changes often
  • Locked into Gamma's format
  • Export quality varies
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier. Market leader with reason. Start here for serious video.B-tier. Useful for first drafts. v0 is the better bet for shipping code.A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.
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