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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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Lex
A
ChatGPT Operator
B
Perplexity
S
Fathom
S
TaglineGoogle Docs with an AI collaborator baked in.OpenAI's browser agent. Clicks and types on websites for you.AI search done right. Cited answers, not chat theater.Meeting notes, free forever for individuals.
Categorywritingagentsresearchmeeting
PricingFree + $12/moIncluded with ChatGPT Pro $200/moFree + $20/mo ProFree for individuals + $15-$29/user/mo teams
Best forEssays, long-form drafts, thinking on the page.Power users willing to pay $200/mo for a browser bot.Replacing Google for any question where you want a cited answer in seconds.Solo operators, freelancers, small teams on a budget.
Strengths
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
Weaknesses
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Bot-joining model
  • Team features gated
Kai's verdictA-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.B-tier. Still early. Manus is more flexible for less money.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for solo + free. The best free option, hands down.
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