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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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Sora
A
Elicit
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Lex
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Cursor
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TaglineOpenAI's video model. Long clips, cinematic quality.AI research assistant for academic literature.Google Docs with an AI collaborator baked in.VS Code fork that made AI coding actually work.
CategoryVideoResearchWritingCoding
PricingIncluded with ChatGPT Plus/ProFree + $12-$42/moFree + $12/moFree + $20/mo Pro + $40/mo Business
Best forChatGPT subscribers experimenting with cinematic shots.Grad students, researchers, anyone doing literature reviews.Essays, long-form drafts, thinking on the page.Developers. Non-developers who want to ship working code.
Strengths
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Academic-only
  • Can hallucinate citations — verify everything
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictA-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for academic research. Nothing else comes close for systematic reviews.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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