On Wednesday, Google announced that its Gemini chatbot now supports "notebooks," a feature for organizing chats, files, and custom instructions into dedicated project spaces. The Verge's Jay Peters noticed the obvious: "Notebooks sound a lot like ChatGPT's Projects feature, which launched in 2024."
On the surface, he's right. Dig below it, and you find something different.
ChatGPT Projects lets you group conversations. Claude's Projects does roughly the same thing. Both are organizational features bolted onto chat interfaces. Google's version does something neither competitor can match: it syncs every notebook bidirectionally with NotebookLM, Google's document-grounded research tool. Sources you add in Gemini appear in NotebookLM. Conversations from Gemini become citable sources inside NotebookLM. Two products, one knowledge layer.
That distinction marks a structural shift in how AI companies think about value. The chat thread is dying as the basic unit of AI work. The persistent knowledge base is replacing it. And Google is the only company positioned to own that transition, because Google already owns the files.
Implicator