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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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Runway
S
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Descript
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TaglineThe pro's AI video tool. Gen-4 is the current bar.Build a full app from a prompt. Stripe-ready.Run any open-source AI model with an API call.Edit video + podcasts by editing the transcript.
CategoryVideoDesignDev PlatformVideo
PricingFree + $15-$95/moFree + $25-$100/moPay per second of computeFree + $16-$50/mo
Best forMarketing video, pitch decks, b-roll, creative shorts.Non-devs + solopreneurs shipping MVPs.Developers using open-source models (Flux, SDXL, Whisper, etc).Podcasters, course creators, anyone editing talking-head content.
Strengths
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Edit audio/video by deleting text
  • Overdub (voice clone) for fixes
  • Strong collaboration + remote recording
Weaknesses
  • Expensive at scale
  • Still needs post-editing
  • Complexity ceiling
  • Can generate brittle code
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Not a traditional NLE — some workflows awkward
  • Overdub ethics require care
Kai's verdictS-tier. Market leader with reason. Start here for serious video.A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.S-tier for open-source model APIs. The default in this space.S-tier for content creators. Cuts editing time in half. Non-obvious but life-changing.
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