Google's latest update for its AI-powered research tool NotebookLM can turn the materials you want to pore over into a podcast-like audio discussion. The new feature called Audio Overview takes information from documents you've uploaded and then generates a "deep dive" discussion between two AI hosts. In addition to summarizing your sources, Google says the hosts will be able to find links between different topics and even banter back and forth. Based on the example the company posted with its announcement, the AI hosts sounded human enough to listen to, though you could still determine that the voices were AI-generated from their inflections and odd pronunciations of certain words.

Since the feature is still in its experimental stages, Google admits that it has its limitations. The hosts can only speak English at this time, and they sometimes say inaccurate information, which means you will have to double check your material and ensure you didn't just learn something that's not factual. You also can't interrupt the hosts while they're speaking yet, and it still takes several minutes for NotebookLM to generate an Audio Overview for notebooks with larger files. Biao Wang, Google Labs product manager, wrote in the feature's announcement post that his team is "excited to bring audio into NotebookLM" despite those limitations, since they "know some people learn and remember better by listening to conversations."

The company launched NotebookLM back in 2023 as some sort of a digital assistant that you can ask questions about the documents you upload. In June this year, Google announced that NotebookLM has officially started running on Gemini 1.5 Pro, giving it new features and tools, and has expanded to over 200 countries and territories.