Students, researchers, curious minds, and professionals who pile up PDFs, articles, and notes without ever finding them again. If you've ever spent 20 minutes hunting for a document, this one's for you.
Price verified on November 1, 2026.
NotebookLM (notebooklm.google.com), Google's research assistant. You give it your documents, it reads them all and answers your questions while citing its sources. It can even generate a podcast-style audio summary.
Trigger: You add sources or ask a question — reads your documents, cross-checks passages, and cites its evidence, and you get a sourced answer or a usable audio summary.
€0/month with a free Google account (optional paid Google AI plans: Plus starting at ~€5/month, Pro ~€22/month, for more capacity). Free with a Google account, with no time limit (product renamed Gemini Notebook in 2026; optional paid Pro version).
Yes. Free with a Google account, with no time limit (product renamed Gemini Notebook in 2026; optional paid Pro version).
Level: Easy. Setup takes 4 steps; the first one: Sign in with your free Google account.
Check the answers on anything that really matters by clicking the cited sources. Avoid uploading highly confidential documents before reading the privacy settings.
I waste hours looking for reliable answers online
$0 to $20/month ($17/month billed annually; Max at $200/month, or $167 billed annually). The free version is more than enough for everyday use.
Comparison: NotebookLM or Perplexity?I waste 40 minutes a day sorting my emails
$50 in free credits for 7 days, then from $49.99/user/month (5,000 credits).
My calendar is overflowing and I can't fit in my real tasks anymore
$0 to $12/month (free plan is enough to get started).
I'm embarrassed to send emails riddled with mistakes
€5 to €11/month (annual license, about €60 to €130/year depending on the plan).
Profile updated on November 5, 2026 — see what's new at the Directory.