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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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DeepSeek
S
Runway
S
Rows
A
OpenRouter
S
TaglineChinese open-weight powerhouse. Crazy cheap, genuinely smart.The pro's AI video tool. Gen-4 is the current bar.Spreadsheets with AI + live integrations baked in.One API, every model. Pay-as-you-go, no subscriptions.
CategoryChatbotsVideoDataDev Platform
PricingFree web + ultra-cheap API (~$0.14/M input tokens)Free + $15-$95/moFree + $19-$89/user/moPay per token — model-dependent
Best forDevelopers + cost-conscious builders. Anyone fine with self-hosting.Marketing video, pitch decks, b-roll, creative shorts.Ops teams, marketers, anyone building dashboards from multiple sources.Developers experimenting across models. Apps that want fallback logic.
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
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
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
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Slight markup over direct API
  • Some provider features not exposed
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.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for model-shopping. I use this for every prototype before committing.
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