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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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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Granola
S
Perplexity
S
Lex
A
NotebookLM
S
TaglineMeeting notes that don't suck. Runs locally, no bot joins.AI search done right. Cited answers, not chat theater.Google Docs with an AI collaborator baked in.Google's research notebook. Turns your docs into a podcast.
CategoryMeetingsResearchWritingResearch
PricingFree + $18/moFree + $20/mo ProFree + $12/moFree
Best forFounders, execs, consultants who live in calls.Replacing Google for any question where you want a cited answer in seconds.Essays, long-form drafts, thinking on the page.Students, researchers, anyone with a stack of PDFs or a topic to learn.
Strengths
  • No bot in the call — runs on your Mac
  • Strong templates
  • Fast summaries
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Upload anything, ask questions, get cited answers
  • Audio Overview turns docs into a 10-min podcast
  • Great for studying
Weaknesses
  • Mac-only
  • Single-user by design
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Google-only
  • Can be slow on large corpora
Kai's verdictS-tier. Category-defining UX. If you take notes in meetings, switch this week.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
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