Our verdict · 8.4/10 Excellent
The best free tool for researching and summarising a defined set of documents. It is not a general assistant and works best inside the Google ecosystem.
Key takeaways
- Best for: Summarising reports, contracts and research.
- Strongest area: Value for money (9.4/10). Weakest: Integrations & ecosystem (7.2/10).
- Price: Free; higher limits with Google AI plans or Workspace — free plan available.
- Watch out for: Limited to uploaded sources.
What is NotebookLM?
NotebookLM lets you upload PDFs, Docs, slides, websites and videos, then ask questions, generate briefings and audio overviews grounded in those sources with inline citations. It is free for personal use and included with many Google Workspace business plans with enterprise data protections.
NotebookLM is made by Google and is reviewed here as a AI assistant. It is priced on a freemium basis, and our editorial score is 8.4 out of 10, calculated from six weighted criteria.
Who it’s for — and who should skip it
Choose NotebookLM if
- Summarising reports, contracts and research
- Onboarding packs and training material
- Teams on Google Workspace
Not for you if
- Open-ended web research
- Teams on Microsoft 365 wanting native integration
Key features
Answers come with citations to your documents.
Podcast-style summaries of a notebook.
Generate FAQs, timelines and summaries.
Share notebooks with colleagues.
- Google Drive
- Google Docs
- Google Slides
- YouTube
Pros & cons
What we like
- Answers cite your own sources
- Audio and video overviews
- Free for individuals
- Workspace data protections on business plans
Watch out for
- Limited to uploaded sources
- Few integrations outside Google
- Source and notebook limits on free tier
Pricing & true cost
| Plan | Indicative price | Notes |
|---|---|---|
| Free | Free | — |
| With Google Workspace | Custom quote | Included in qualifying plans |
Pricing watch-out: Included in qualifying Google Workspace plans; higher limits come with Google AI Pro. Check Google for current limits.
True cost at 5, 10 and 25 seats
Cheapest paid plan that fits each team size, from indicative list prices checked November 5, 2026. Excludes tax, add-ons, onboarding fees and promotional discounts.
Pricing watch-outs
- Quote-only tier. With Google Workspace has no public price. Ask for a written quote that includes onboarding and support fees.
Contract questions to ask before you sign
- Does the plan auto-renew, and how many days’ notice do you need to cancel?
- Is the advertised price for annual billing? What is the month-to-month price?
- Is the first-year price a promotion? What will renewal cost, and is it capped?
- Is there a minimum number of seats, or a charge for inactive users?
- Are onboarding, implementation or premium-support fees extra?
- How do we export all our data if we leave, and in what format?
General questions for any vendor — not findings about this product. Build a full checklist with our requirements builder.
Indicative USD pricing, last checked November 5, 2026 (source). Vendors change prices and promotions often — always confirm on their website. Model your own numbers with our SaaS TCO calculator.
Score breakdown
| Criterion | Weight | Score | Points | |
|---|---|---|---|---|
| Features & fit | 25% | 8.2 | 2.10 | |
| Ease of use | 15% | 9.2 | 1.40 | |
| Value for money | 15% | 9.4 | 1.40 | |
| Support & reliability | 10% | 7.4 | 0.70 | |
| Security & privacy | 20% | 8.6 | 1.70 | |
| Integrations & ecosystem | 15% | 7.2 | 1.10 | |
| Overall | 100% | Weighted for AI tools products | 8.4 | |
Security & compliance facts
| Item | Status | Question to ask Google |
|---|---|---|
| Multi-factor authenticationStops most account takeovers from reused or phished passwords. | Not verified by us | Can admins enforce MFA for every user, on every plan? |
| Single sign-on (SAML/OIDC)Lets you remove a leaver’s access everywhere from one place. | Not verified by us | Is SSO included on the plan we are buying, or only on enterprise tiers? |
| SOC 2 Type II reportIndependent audit of the vendor’s security controls — often required by larger customers. | Not verified by us | Can we see your current SOC 2 Type II report (under NDA if needed)? |
| ISO/IEC 27001 certificationInternational standard for running an information-security programme. | Not verified by us | Which legal entity and services does your ISO 27001 certificate cover? |
| GDPR data processing agreementNeeded if you handle personal data of people in the EU/UK. | Not verified by us | Do you offer a signed DPA and list your sub-processors? |
| HIPAA business associate agreementRequired before US healthcare businesses store protected health information. | Not verified by us | Will you sign a BAA, and on which plans? |
We have not yet verified these items for NotebookLM against a primary source, so we don’t claim them either way. Check Google’s trust or security page and ask for documents in writing.
Before you buy any AI assistant
Check NotebookLM against the same list we use for every AI assistant — and confirm each point on the plan you intend to buy, not the top tier.
- Data is excluded from training on your plan
- Admin console and usage controls
- File and document analysis
- Integration with your office suite
- Predictable per-seat pricing
See every ranked option in AI Assistants.
NotebookLM alternatives
Pick an alternative by what matters to you
Computed from our published scores and indicative pricing for tools in the same category as NotebookLM. Scores are editorial; see the methodology.
Editor’s picks
Google's AI assistant, built into Workspace apps like Gmail, Docs and Sheets.
An AI answer engine that searches the web and cites its sources.
A thoughtful AI assistant known for long documents, nuanced writing and coding.
Review history
- Scored under methodology v2.0 (six weighted criteria, computed overall score).
NotebookLM FAQ
Is NotebookLM free?
Yes for personal use, with higher limits available on paid Google AI plans and qualifying Workspace plans.
Does NotebookLM use my data for training?
Google says Workspace customer data is not used to train models; check the terms for personal accounts.
Does NotebookLM have a free plan?
Yes. NotebookLM offers a free plan. Paid plans start at higher limits with Google AI plans or Workspace (indicative — check the vendor for current pricing).
Who is NotebookLM best for?
NotebookLM is best for: summarising reports, contracts and research; onboarding packs and training material; teams on Google Workspace.
How is the NotebookLM score calculated?
The 8.4/10 overall score is a weighted average of six sub-scores — features & fit, ease of use, value, support & reliability, security & privacy, and integrations — using the published weights for AI products. Affiliate relationships have no input. See our methodology page for the full rubric.
What are the best alternatives to NotebookLM?
Popular alternatives include Google Gemini, Perplexity, Claude. See our comparisons for side-by-side verdicts.