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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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Dev Platform
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Video
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Image
Meetings
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Devin
A
Kling
A
Gamma
A
Lex
A
TaglineCognition Labs' autonomous coding engineer.Kuaishou's video model. The surprise standout.AI slide decks that don't look AI-generated.Google Docs with an AI collaborator baked in.
CategoryAgentsVideoProductivityWriting
Pricing$500/moCredit-based, free trialFree + $10-$20/moFree + $12/mo
Best forEngineering teams offloading tickets. Ops/platform work.Anyone who wants top-tier video quality for less.Pitch decks, proposals, internal presentations — fast.Essays, long-form drafts, thinking on the page.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • UX is rough for English speakers
  • Queue times
  • Locked into Gamma's format
  • Export quality varies
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
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