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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
Grammarly
A
Hex
A
TaglineVS Code fork that made AI coding actually work.Grammar check + tone + AI drafting, everywhere you type.Modern data notebook with Magic AI assistant.
Categorycodingwritingdata
PricingFree + $20/mo Pro + $40/mo BusinessFree + $12-$15/mo Premium + team plansFree + $28+/user/mo
Best forDevelopers. Non-developers who want to ship working code.Non-native English writers, business email, anyone who types a lot.Data teams at startups + enterprises.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • SQL + Python + no-code in one notebook
  • Magic AI writes queries + viz for you
  • Team-grade collaboration
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Overkill for casual users
  • Enterprise pricing
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.A-tier for data teams. S-tier if you already live in SQL + Python.
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