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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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Cursor
S
GitHub Copilot
B
Grammarly
A
Kling
A
TaglineVS Code fork that made AI coding actually work.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Grammar check + tone + AI drafting, everywhere you type.Kuaishou's video model. The surprise standout.
Categorycodingcodingwritingvideo
PricingFree + $20/mo Pro + $40/mo BusinessFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$15/mo Premium + team plansCredit-based, free trial
Best forDevelopers. Non-developers who want to ship working code.Teams with GitHub already. Devs who don't want to change IDEs.Non-native English writers, business email, anyone who types a lot.Anyone who wants top-tier video quality for less.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • UX is rough for English speakers
  • Queue times
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.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.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.
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