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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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S
Lex
A
Sora
A
Granola
S
TaglineRun any open-source AI model with an API call.Google Docs with an AI collaborator baked in.OpenAI's video model. Long clips, cinematic quality.Meeting notes that don't suck. Runs locally, no bot joins.
CategoryDev PlatformWritingVideoMeetings
PricingPay per second of computeFree + $12/moIncluded with ChatGPT Plus/ProFree + $18/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Essays, long-form drafts, thinking on the page.ChatGPT subscribers experimenting with cinematic shots.Founders, execs, consultants who live in calls.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • No bot in the call — runs on your Mac
  • Strong templates
  • Fast summaries
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Mac-only
  • Single-user by design
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier. Category-defining UX. If you take notes in meetings, switch this week.
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