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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.
Pick tools (4 selected)
Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Grammarly
A
Runway
S
Cursor
S
Framer
A
TaglineGrammar check + tone + AI drafting, everywhere you type.The pro's AI video tool. Gen-4 is the current bar.VS Code fork that made AI coding actually work.Design + publish sites with AI assists built in.
CategoryWritingVideoCodingDesign
PricingFree + $12-$15/mo Premium + team plansFree + $15-$95/moFree + $20/mo Pro + $40/mo BusinessFree + $5-$30/mo
Best forNon-native English writers, business email, anyone who types a lot.Marketing video, pitch decks, b-roll, creative shorts.Developers. Non-developers who want to ship working code.Designers shipping marketing sites without engineers.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • AI generates sections + copy + layouts
  • Designer-first publishing (not just templates)
  • Great animations
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Expensive at scale
  • Still needs post-editing
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Less flexible than raw code
  • Pricing per-site adds up
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier. Market leader with reason. Start here for serious video.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier for designer-led sites. S-tier if animations matter.
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