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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
Perplexity
S
Hex
A
Cursor
S
TaglineGrammar check + tone + AI drafting, everywhere you type.AI search done right. Cited answers, not chat theater.Modern data notebook with Magic AI assistant.VS Code fork that made AI coding actually work.
CategoryWritingResearchDataCoding
PricingFree + $12-$15/mo Premium + team plansFree + $20/mo ProFree + $28+/user/moFree + $20/mo Pro + $40/mo Business
Best forNon-native English writers, business email, anyone who types a lot.Replacing Google for any question where you want a cited answer in seconds.Data teams at startups + enterprises.Developers. Non-developers who want to ship working code.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • SQL + Python + no-code in one notebook
  • Magic AI writes queries + viz for you
  • Team-grade collaboration
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Overkill for casual users
  • Enterprise pricing
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier for data teams. S-tier if you already live in SQL + Python.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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