Audio Overviews are generated in your account’s preferred language. This update also introduces a new “Output Language” option in NotebookLM’s settings; your Audio Overviews are always generated in the language you select here. You can change the language at any time and your audio and chat responses will reflect this, making it easy to create multilingual content or study materials as needed.

For example, a teacher preparing a lesson on the Amazon rainforest can share resources in various languages — like a Portuguese documentary, a Spanish research paper and English study reports — with their students. The students can upload these and can generate an Audio Overview of key insights in their preferred language. This capability breaks down language barriers and makes the information more accessible to everyone.