NotebookLM is a research tool from 📝Google, described by its help center as "an AI-powered research assistant designed to help you refine and organize your ideas," and renamed Gemini Notebook in July 2026.
Google announced the change on July 16, 2026 in a post titled "NotebookLM is now Gemini Notebook," stating: "We're renaming NotebookLM to Gemini Notebook." The same post says Google introduced NotebookLM at Google I/O 2023 as Project Tailwind, and that it remains a standalone product that will now do more across the Google ecosystem, including inside the Gemini app and Google Search.
Gemini Notebook works from sources the user supplies. Google's help center lists PDFs, websites, YouTube videos, audio files, Google Docs and Google Slides as sources, and says the tool turns them into study guides, briefings, audio overviews, mind maps and more.
In the rename announcement, Google also said it had begun rolling out an update that gives every notebook a secure cloud computer, letting Gemini Notebook write and execute code for data analysis grounded in the user's sources. Google said the update was available first to Google AI Ultra users and certain Workspace business customers, and would reach Pro users on the web over the following weeks.