Directory · Research
NotebookLM
Google's source-grounded notebook. Upload docs, chat with them, generate audio overviews.
Free
Best for
Studying PDFs, summarizing sources, personal knowledge bases
Pros and cons
Pros
- Audio Overviews are uncanny good
- Source-grounded answers
- Free
Cons
- Limited to uploaded sources
- Source size caps
- No API
Alternatives
Claude ProjectsChatGPT Custom GPTs