NotebookLM is Google's AI-powered research and note-taking tool that lets users upload documents, PDFs, websites, and other sources, then ask questions, generate summaries, and produce study materials grounded in those sources with citations. A distinctive Audio Overviews feature generates podcast-style conversations between two AI hosts discussing the content. As of 2026 Google expanded tiers significantly, adding Video Overviews, Deep Research reports, and higher notebook limits at paid tiers. Key features: - Source-grounded Q&A with inline citations across all uploaded materials - Audio Overviews: AI-generated podcast conversations about your sources - Video Overviews and Deep Research reports (paid tiers) - Study guides, FAQs, timelines, and briefing documents auto-generated from sources - Notebook sharing and collaboration (Plus and above) - Mobile app on Android and iOS
Free: 100 notebooks, 50 sources/notebook, 50 chats/day, 3 audio generations/day. Plus (Google AI Plus $7.99/month): 200 notebooks, 6 audio/video overviews/day. Pro (Google AI Pro $19.99/month): higher limits. Ultra ($99.99-$200/month): maximum limits. Student pricing: $9.99/month for Pro.