Google is starting to blur the lines between its flagship Gemini chatbot and one of its most powerful AI tools, NotebookLM. A new integration is now rolling out to some users, letting them attach entire notebooks as context directly inside Gemini chats.
NotebookLM, Google’s research and knowledge-organizing assistant, has long been praised as one of the company’s most genuinely useful AI products. Until now, though, it lived in its own separate interface. That’s beginning to change.
According to Alexey Shabanov of TestingCatalog, NotebookLM is now showing up as an attachment option inside Gemini for a small subset of users. The feature first appeared in code during an APK teardown and was later spotted in limited testing. Over the weekend, Google seems to have kicked off a broader, but still very controlled, rollout.
BREAKING 🚨: Google is rolling out a NotebookLM integration for Gemini, where users will be able to attach notebooks as a context to their conversations.
— TestingCatalog News 🗞 (@testingcatalog) December 13, 2025
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When enabled, the Gemini chat interface gains a new NotebookLM option in the attachment sheet (the Plus button next to the text box). Tapping it lets you attach one of your existing notebooks, effectively giving Gemini direct access to that notebook’s contents for richer, more grounded responses. You can then ask Gemini to summarize, compare, brainstorm, or reason over that material using Google’s latest reasoning models — without ever leaving the Gemini app.
Crucially, the integration isn’t one-way. A “Sources” button in the chat lets you jump straight back into the NotebookLM interface whenever you need to dig into the original documents, notes, or structure behind the answer Gemini just gave you.
So far, access is extremely limited. Shabanov notes that NotebookLM only appears in Gemini on one of his five accounts. Android Authority also reports that even on a paid Gemini Advanced (Pro) account, the NotebookLM attachment option is still missing. That strongly suggests Google is running an early-stage experiment or server-side test rather than a full rollout.
Once the integration is widely available, it could significantly change how power users work with Gemini. Instead of manually pasting or uploading documents every time, they’ll be able to treat notebooks as persistent, reusable context bundles that sit just one tap away in every conversation.
Google has yet to officially announce the NotebookLM–Gemini integration, but given the current small-scale availability, a broader rollout and formal reveal later on seem likely. For now, if you’re using Gemini, it’s worth checking the attachment menu to see if NotebookLM has quietly appeared for your account.