NotebookLM

New

Upload your docs, PDFs, and videos — then query, summarize, and generate podcasts from your own source material.

Research

★ 4.5(12,400 reviews)freemium

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Overview

NotebookLM is Google's AI research assistant that turns your uploaded documents, PDFs, YouTube videos, and Google Docs into an interactive knowledge base you can query in plain language. It generates accurate, source-cited answers, builds mind maps and study guides from your sources, and produces podcast-style audio summaries via its Audio Overview feature.

Key Features

Source-grounded answers with inline citations linked back to your uploaded materials
Audio Overview — generates a two-host podcast conversation summarizing your sources
Supports PDFs, Google Docs, YouTube URLs, websites, and audio files as sources

Pros

• Strictly cites sources from your uploaded materials — no hallucinations outside your knowledge base
• Audio Overview makes dense research digestible for commutes and passive review

Cons

• Limited to 50 sources per notebook and 500k words per source on the free tier
• No real-time web search — answers are bounded by what you upload