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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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Lovable
A
Runway
S
Replicate
S
TaglineBuild a full app from a prompt. Stripe-ready.The pro's AI video tool. Gen-4 is the current bar.Run any open-source AI model with an API call.
Categorydesignvideodev platform
PricingFree + $25-$100/moFree + $15-$95/moPay per second of compute
Best forNon-devs + solopreneurs shipping MVPs.Marketing video, pitch decks, b-roll, creative shorts.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Complexity ceiling
  • Can generate brittle code
  • Expensive at scale
  • Still needs post-editing
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.S-tier. Market leader with reason. Start here for serious video.S-tier for open-source model APIs. The default in this space.
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