Open NotebookLM is a tool that utilizes open-source language models and text-to-speech models to process PDF content, generating natural dialogues for audio podcasts and outputting them as MP3 files. The project is inspired by the NotebookLM tool and achieves its functionality through the use of large open-source language models (LLMs) and text-to-speech technology. It not only enhances the accessibility of information but also offers content creators a new medium to convert written content into audio format, expanding their audience reach.