What it is
Formerly NotebookLM, renamed in July 2026. You load it with your own sources — PDFs, docs, videos, websites — and it answers only from them, with citations back to the page. It can also turn a stack of sources into a podcast-style audio overview.
Best for
Studying for a certification, or turning your own programme materials into a searchable knowledge base. Audio overviews of a dense manual make the commute useful.
Watch out for
Grounded does not mean infallible — it still summarises badly sometimes. And do not upload client files to a tool you have not checked the data terms of.
