NotebookLM
Google's AI that studies your documents and creates summaries and podcasts.
Price: Very complete free plan (100 notebooks, 50 sources/notebook). Plus from $7.99/month.
Platforms: Web · iOS · Android
Free plan: yes
API available: no
Open source: no
Available in Spanish: yes
What is NotebookLM?
NotebookLM is Google's tool for researching and studying from your own documents: you upload sources (PDFs, web pages, videos, notes) and the AI answers questions citing those sources, generates summaries, mind maps, flashcards, quizzes and even podcasts (Audio Overviews) and explainer videos. Essential for students and researchers.
Pros
- Answers by citing YOUR sources: it barely makes things up
- Audio Overviews: turns your notes into a two-voice podcast
- Very generous free plan for students
- Mind maps, flashcards, quizzes and Deep Research included
Cons
- No public API for developers
- Paid tiers are sold inside Google subscriptions (AI Pro/Ultra)
- Limited to working on the sources you upload
Frequently asked questions
Is NotebookLM free?
Yes, the free plan includes 100 notebooks, 50 sources per notebook, 50 daily queries and Audio/Video Overviews. The Plus plan ($7.99/month) doubles the limits.
Does it work in Spanish?
Yes, the interface, the answers and the generated podcasts all work in Spanish.
What kinds of sources can I upload?
PDFs, Google Docs and Slides, web pages, YouTube videos, audio and pasted text, among others.