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AI research notebook grounded in your sources.
NotebookLM (now also branded Gemini Notebook) is Google's AI research notebook. You upload your own sources, such as PDFs, documents, websites or videos, and it answers questions, makes summaries, slides and 'Audio Overviews' based only on those sources, with citations.
Students, researchers, writers and professionals working with a set of documents.
Free plan: yes · Paid plans from $4.99/month (via Google AI Plus)
Free with a Google account. Higher limits through Google AI Plus ($4.99/month), Google AI Pro ($19.99/month) and Ultra (from $99.99/month).
Last verified Oct 15, 2026 on the official pricing page. Prices can change; check before you buy.
What it does: AI answer engine with cited sources.
Who it's for: Curious people, students and professionals who want quick answers with sources they can verify.
What it does: AI research assistant for papers.
Who it's for: Researchers, students, clinicians and analysts who work with scientific literature.
What it does: AI search engine for research papers.
Who it's for: Students, health professionals, journalists and curious people who want evidence-based answers.