Gemini Notebook (NotebookLM) Adds 'Expert Intelligence' With Access to 100,000+ Books
Google announced “Expert Intelligence” for Gemini Notebook (the product formerly known as NotebookLM) on September 17, 2026, a new way to ground notebooks in trusted, published sources rather than only user-uploaded material. The feature launches first in Gemini Notebook, giving users access to more than 100,000 books from major publishers.
Details
- What it does: users can add compatible ebooks purchased through Google Play Books directly into a Gemini Notebook, then ask questions with answers grounded in that book’s actual text
- Combine with personal sources: book content can sit alongside a user’s own documents, syllabi, or notes in the same notebook, letting Gemini Notebook cross-reference both
- Generated outputs supported: infographics, audio overviews, quizzes, and other Studio-style outputs can be built from book sources the same way they work for other material
- Example use cases Google cites: students pairing a course syllabus with assigned textbooks to prepare for exams, and managers consulting business books for leadership guidance
- Sharing caveat: if a notebook containing a book is shared, recipients must have purchased that same ebook themselves to interact with it
- Rollout: available now to Rapid Release and Scheduled Release Google Workspace domains, plus Workspace Individual subscribers and personal Google Account users who have Gemini Notebook, Google Play, and Google Books enabled
What happened next
Expert Intelligence extends Gemini Notebook’s core pitch — answers grounded in verifiable sources — beyond material a user personally uploads, tying it directly into Google’s existing Play Books catalog and purchase flow. Google described it as the first application of a broader “Expert Intelligence” initiative intended to bring trusted third-party content into its AI products, suggesting more publisher or expert-source integrations could follow in other Google AI surfaces.