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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)
Chatbots
Research
Coding
Image
Video
Voice
Meetings
Design
Productivity
Audio
Writing
Agents
Dev Platform
Data
Marketing
Education
Kling
A
GitHub Copilot
B
Grammarly
A
v0
S
TaglineKuaishou's video model. The surprise standout.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Grammar check + tone + AI drafting, everywhere you type.Vercel's AI-powered UI generator. Prompt to shadcn component.
CategoryVideoCodingWritingDesign
PricingCredit-based, free trialFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$15/mo Premium + team plansFree + $20/mo
Best forAnyone who wants top-tier video quality for less.Teams with GitHub already. Devs who don't want to change IDEs.Non-native English writers, business email, anyone who types a lot.Frontend devs, PMs prototyping UIs, anyone on Next.js.
Strengths
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Ships working React + Tailwind code
  • Shadcn/ui native
  • One-click deploy to Vercel
Weaknesses
  • UX is rough for English speakers
  • Queue times
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Best for shadcn stack
  • Iterating can be fiddly
Kai's verdictA-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier. If you're on Vercel/shadcn, this is cheating.
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