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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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TaglineThe pro's AI video tool. Gen-4 is the current bar.AI-powered networked notes. Roam with a brain.Run any open-source AI model with an API call.
CategoryVideoProductivityDev Platform
PricingFree + $15-$95/mo$10/moPay per second of compute
Best forMarketing video, pitch decks, b-roll, creative shorts.Knowledge workers + thinkers who want AI in their second brain.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Expensive at scale
  • Still needs post-editing
  • Expensive for just notes
  • Smaller community than Obsidian
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictS-tier. Market leader with reason. Start here for serious video.A-tier. Niche but beloved. If you've outgrown Notion, try this.S-tier for open-source model APIs. The default in this space.
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