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The Stack / Research

Gemini Notebook (was NotebookLM)

01 Intelligence

Yes, and it's free to start — NotebookLM's constraint (answers only from your sources) is exactly what makes it trustworthy for real research. Audio Overviews turn dense material into listenable briefings, and the 1M-token context window now runs on every plan including Free. The sleeper pick in the research category.

The job in the stack

The source-grounded seat: synthesizing your documents, transcripts, and research into answers that cite themselves.

Pricing

Plan Price Notes
Free $0 Generous notebook/source limits; full 1M-token context window included
Plus (via Google AI Plus) $4.99/mo Mid-tier limits bump ("more access"). Cut from $7.99 on June 8, 2026 ($49.99/yr) for the 400 GB version; Google also sells a 2 TB AI Plus at $9.99/mo with the same AI features. Flash models only from Nov 13, 2026
Pro (via Google AI Pro) $19.99/mo Higher limits, bundled with the Google AI Pro plan
Ultra (via Google AI Ultra) $99.99–$200/mo Only tier with Cinematic Video Overviews. Now named Ultra 5x ($99.99) and Ultra 20x ($199.99)

Pricing verified 2026-10-26. Plans change — the source of truth is Gemini Notebook (was NotebookLM)'s own pricing page.

Models & versions

  • Gemini 3.5 Became the default model June 8, 2026 (was Gemini 3 from Dec 2025, then 3.1 Pro for some features) — source-grounded answers throughout
  • Audio Overviews Two-host podcast-style briefings from your sources
  • Cinematic Video Overviews Launched March 2026 — animated, narrative-led video from source material; English only, 18+, Ultra plan only
  • Deep Research Added Nov 2025 — builds a cited source list from the open web on its own, on top of your loaded sources
  • Native code execution Added with the July 2026 rename — writes and runs code against your loaded sources for data analysis
  • Compute-based usage limits Replaced simple daily prompt counts on September 2, 2026. Usage now meters compute — prompt complexity, model, chat length, and feature — refreshing every 5 hours against a weekly cap, on every tier including Free. Paid plans get a multiplier: Plus 2x, Pro 4x, Ultra $100 tier 5x, Ultra $200 tier 20x. When you hit the cap, it can suggest a lighter output or let you schedule a heavy job (like a Video Overview) for later with a notification.
  • Studio artifacts The Studio panel now generates Infographics and Slide Decks alongside Audio and Video Overviews, Study Guides, Flashcards and Quizzes — and a notebook can be copied whole, artifacts included. Generation is Gemini Notebook only: the Gemini app can open these notebooks but cannot make Studio artifacts from them
  • NotebookLM Enterprise Generally available to Gemini Enterprise Business edition users, with slide-deck and infographic generation included. Relevant only if your org already buys Gemini Enterprise — there is no standalone enterprise seat
  • September 2026 study tools Real-time voice conversations with a notebook in nearly 100 languages (mobile, Google AI Ultra first, 18+), a mobile audio recorder whose notes sit alongside your sources, interactive Learning Overviews, and ~60-second Video Overviews in 80+ languages. Notebooks also now sync with a Notebooks space inside the Gemini app (gradual rollout from Sept 14), so a source added in one shows up in the other

The honest read

What works

  • + Answers cite the exact passage in your sources — hallucination boundary built in
  • + Audio Overviews are a genuinely new way to absorb dense material
  • + Free tier is generous enough for serious personal research

What breaks

  • − Default answers still only draw on what you feed it — Deep Research is an opt-in add-on, not a mode switch
  • − Source limits force curation on big projects
  • − Collaboration features are thin compared to a real workspace
  • − Usage limits are now compute-based, not a flat daily count — harder to predict when you'll hit the wall

Use it for

  • →Digesting reports, transcripts, and papers into working notes
  • →Building a queryable base from your own content archive
  • →Turning research into audio briefings for commute-time review

Skip it if

  • ×You need open-web research — that's Perplexity's job
  • ×Your sources are scattered and unexportable — garbage in, garbage out

Questions operators ask

?NotebookLM or Perplexity?

Still different jobs, even after NotebookLM added Deep Research (Nov 2025), which builds its own cited source list from the open web on request. Perplexity's default posture is open-web search; NotebookLM's default posture is your documents, with open-web research as an opt-in layer on top. Research stacks that publish carry both.

What changed

  1. Freshness sweep against one.google.com/about/plans: prices hold. Google AI Pro is $19.99 ("expanded access"). AI Plus is $4.99 for the 400 GB version, and the plans page now shows a 2 TB AI Plus at $9.99 with the same Notebook access, so we noted both. Ultra tiers renamed Ultra 5x ($99.99) and Ultra 20x ($199.99), matching the Oct 23 Veo check. Google's plan pages call the product Gemini Notebook, the name used since the July rename. We found no new features announced since the September study tools.
  2. Freshness sweep: pricing tiers and the Sept 2 compute-based limits are unchanged. New since our last check: notebooks now sync with a Notebooks space in the Gemini app (rollout from Sept 14). Google's September study update added real-time voice conversations with a notebook (Ultra first), a mobile audio recorder, interactive Learning Overviews and short ~60-second Video Overviews. Google is also giving US college students 12 months of Google AI Pro free, redeemable through Dec 31, 2026. No verdict change.
  3. Real change: as of September 2, 2026, Gemini Notebook replaced its old flat daily-prompt limits with a compute-based model — usage now factors prompt complexity, model, chat length, and feature, refreshing every 5 hours against a weekly cap. Applies to every tier including Free; paid tiers get a multiplier (Plus 2x, Pro 4x, Ultra $100 tier 5x, Ultra $200 tier 20x). Practical effect: a short question no longer costs the same as a Video Overview, and heavy free-tier use can hit the cap faster on a complex prompt than the old count implied. Pricing tiers themselves are unchanged.
  4. Freshness sweep, first full re-verification since the rename. Consumer pricing holds: Free, Plus $4.99 via Google AI Plus, Pro $19.99, Ultra $99.99-$200. What grew is the Studio panel — Infographics and Slide Decks joined Audio and Video Overviews, Study Guides, Flashcards and Quizzes, and a whole notebook can now be copied with its artifacts. The enterprise version went generally available inside Gemini Enterprise Business edition. Google's help centre now lives at support.google.com/gemininotebook, which settles the rename: NotebookLM is the old name, not an alternate one.
  5. Price correction carried over from the Gemini sweep: the Google AI Plus tier NotebookLM rides on dropped from $7.99 to $4.99/mo ($49.99/yr) on June 8, 2026. Corrected here without a full re-verification of the rest of the entry — last_verified stays at July 24 until the next sweep reaches this tool.
  6. Google renamed NotebookLM to Gemini Notebook on July 16, 2026 (per Google's own announcement) — same product, new name and logo, existing links auto-redirect. The rename shipped with native code execution: the notebook can now write and run code against your sources for data analysis. Keeping the old name in parentheses until the new one settles in search.
  7. Freshness sweep, real changes found: Gemini 3.5 is now the default model (June 8, 2026); 1M-token context opened to every plan including Free; Deep Research (open-web source building) and Cinematic Video Overviews (Ultra-only) shipped; a new $7.99 Plus tier sits below Pro; AI Ultra split into $99.99 and $200 tiers in May 2026. Softened the 'zero general-knowledge fallback' framing since Deep Research is now a real, if opt-in, open-web layer.
  8. Seeded from January 2026 baseline; limits and plan bundling pending fresh verification by the update loop.

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The source-grounded seat: synthesizing your documents, transcripts, and research into answers that cite themselves.

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