Google warns that the tool is still an 'experimental feature.' It also teases a subscription-based NotebookLM Plus with five times more Audio Overviews, notebooks, and sources.

After you’ve created your Audio Overview you simply tap the ‘Interactive mode’ button, then hit play to start your Audio Overview. At any point you can tap the new 'Join' button to join in. When you do a host will invite you to join the conversation, and you can ask it a question.

Google’s NotebookLM and its podcast-like Audio Overviews have been a surprise hit this year, and today Google company is starting to roll out a big new feature: the ability to actually talk with the AI “hosts” of the overviews.

To use the new feature, open NotebookLM, create a new Audio Overview, tap on the new Interactive mode (BETA) button and hit play. When the AI hosts start talking, simply press the ‘Join’ button and one of the hosts will let you ask questions and answer them on your sources.

Google's NotebookLM now allows users to interact with AI-generated podcasts' hosts. Users can join podcasts, customize AI hosts' discussions and voices, and access more features with NotebookLM Plus. NotebookLM may soon be directly integrated into Google Gemini on Android, expanding its accessibility and features.