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DeepSeek
S
Runway
S
TaglineChinese open-weight powerhouse. Crazy cheap, genuinely smart.The pro's AI video tool. Gen-4 is the current bar.
Categorychatvideo
PricingFree web + ultra-cheap API (~$0.14/M input tokens)Free + $15-$95/mo
Best forDevelopers + cost-conscious builders. Anyone fine with self-hosting.Marketing video, pitch decks, b-roll, creative shorts.
Strengths
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
Weaknesses
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Expensive at scale
  • Still needs post-editing
Kai's verdictS-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.S-tier. Market leader with reason. Start here for serious video.
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