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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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Grammarly
A
Sora
A
Kling
A
Lovable
A
TaglineGrammar check + tone + AI drafting, everywhere you type.OpenAI's video model. Long clips, cinematic quality.Kuaishou's video model. The surprise standout.Build a full app from a prompt. Stripe-ready.
CategoryWritingVideoVideoDesign
PricingFree + $12-$15/mo Premium + team plansIncluded with ChatGPT Plus/ProCredit-based, free trialFree + $25-$100/mo
Best forNon-native English writers, business email, anyone who types a lot.ChatGPT subscribers experimenting with cinematic shots.Anyone who wants top-tier video quality for less.Non-devs + solopreneurs shipping MVPs.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Generates full apps + DB + auth
  • Good for non-developers
  • Ships faster than hand-coding
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • UX is rough for English speakers
  • Queue times
  • Complexity ceiling
  • Can generate brittle code
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.A-tier. The strongest 'no-code' AI builder right now. Great for founder MVPs.
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