NotebookLM
documentation
Generative AI
free
beginner setup
Last verified Mar 11, 2026Best For
Researchers, students, and professionals who need to synthesize large amounts of personal or uploaded documentation.
Not Ideal For
Users looking for a general-purpose creative writing assistant or those who need real-time web searching capabilities.
Pros & Cons
- Grounds responses strictly in your provided sources to minimize hallucinations
- Generates impressive AI-powered 'Audio Overviews' (podcast-style summaries)
- Supports up to 50 sources per notebook with massive context windows
- Completely free to use with no current subscription tier
- Cites specific passages from sources for easy fact-checking
- Limited to Google ecosystem for direct file imports
- No public API for third-party integrations yet
- Audio overviews are currently English-only and have limited customization
Key Features
Source Grounding
The AI acts as an expert on the specific documents you upload, prioritizing that information over general training data.
Audio Overview
Converts your documents into a lively, two-person deep-dive discussion in audio format.
Notebook Guide
Automatically generates FAQs, study guides, and table of contents from your uploaded materials.
Inline Citations
Every response includes clickable citations that take you directly to the original text in your source documents.
Multi-format Support
Accepts PDFs, Google Docs, Slides, text files, and even copied web URLs as primary sources.
Pricing Breakdown
- free
- Currently free for all users with a Google account.
⚠️ Pricing is subject to change. Always verify current pricing on the tool's official website before purchasing.
Free Tier
- storage
- Up to 50 sources per notebook; 500,000 words per source
- features
- Full access to all features including Audio Overview
- requests
- High usage limits (subject to Google's fair use policy)
Integrations
Web URLs
Google Docs
Google Drive