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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
ChatGPT
S
Rows
A
Sora
A
TaglineGrammar check + tone + AI drafting, everywhere you type.The default. Strongest ecosystem + best multimodal breadth.Spreadsheets with AI + live integrations baked in.OpenAI's video model. Long clips, cinematic quality.
CategoryWritingChatbotsDataVideo
PricingFree + $12-$15/mo Premium + team plansFree + $20/mo Plus + $200/mo ProFree + $19-$89/user/moIncluded with ChatGPT Plus/Pro
Best forNon-native English writers, business email, anyone who types a lot.General use, voice chat, image generation, first-time AI users.Ops teams, marketers, anyone building dashboards from multiple sources.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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