Type @ in the Docs side panel to reference an existing Notebook. Gemini grounds the draft in those sources and cites them inline. Available now on listed editions.
A seller's research and a seller's writing have always lived in different windows, and the copy-paste between them is where accuracy leaks. The rep who puts a competitor's pricing into a proposal from memory of a tab they closed on Tuesday is the rep who gets corrected in front of a buyer. Pointing a draft at a Notebook puts the sources and the writing in the same place and prints a marker next to the claim, so the person who has to defend a number in a deal review can find where it came from in seconds instead of reconstructing an afternoon of tabs. That is a small change to a document and a large change to how much of your own work you can stand behind.
A Gemini Notebook is a workspace where you collect a set of documents, links and notes and keep them together as one named research set. To ground a draft means to restrict the model to a stated set of sources when it writes, rather than letting it draw on everything it learned in training. An inline citation is the marker left in the text pointing back to the specific source a sentence came from.
"Rapid Release and Scheduled Release domains" are the two speeds Google ships features at — some organisations take updates as soon as they exist, others wait for a scheduled batch. Google listing both as "available now" means there is no staggered wait on this one, which is unusual enough to be worth noticing.
The short version: put your account research in a Notebook, type "@" in Docs to point Gemini at it, and the draft it writes will show which of your own sources each claim came from.
Google announced on September 23, 2026, on the Google Workspace Updates blog, that Gemini Notebook can now be used as a context source inside Google Docs. From the post: "Whether you're drafting a project proposal or a technical whitepaper, simply type '@' in the side panel or bottom bar to reference an existing Notebook. Gemini will ground its output in your sources and provide inline citations, making it easy to verify facts while staying in the flow of your work."
Announced: September 23, 2026, Google Workspace Updates.
Availability: "Rapid Release and Scheduled Release domains: Available now." Business Standard and Plus; Enterprise Standard and Plus; Education Plus; consumer Google AI Pro and Ultra; the Google AI Pro for Education and Teaching and Learning add-ons; and AI Expanded Access.
Price: Not stated.
Regions: Not stated.
Two switches have to be on. For admins: "These features are available by default if Gemini for Workspace in Drive is enabled." For end users: "You must have Workspace smart features enabled to use these features."
What it doesn't do: The post sets no limit on how many Notebooks or sources you can reference, does not say whether a Notebook shared with you behaves the same as one you built yourself, names no document or source size cap, and does not mention mobile. It also does not claim the citations are checked. Google's wording is that they make it "easy to verify facts" — which puts the verifying on you. Grounding narrows where a draft's claims come from; it does not make them correct. The edition list names Business Standard and Plus, and Business Starter is not on it.
SDR — Build the Notebook per account, not per document. One Notebook for the account you are working, holding the filing excerpt, the press release and your notes from the two calls so far, then draft the sequence against it. The citation is how you catch yourself: if a line in your email has no marker behind it, you did not read that somewhere, you assumed it.
AE — The proposal is the use, and Google names it. The discipline worth adopting is building the Notebook during discovery rather than the night before the proposal is due, because the point is to have the buyer's own words in the source set. A proposal grounded in what the customer said is harder to argue with than one grounded in what you believe, and the citation is what lets you say so out loud in the room.
Manager — Deal review changes shape when every claim in a document carries a source marker. "Where did this number come from" now has an answer inside the document rather than a story told around it. Consider making a cited draft the standard for anything that reaches a buyer above a deal-size threshold — but write the standard as being about documents, not about this tool, because the discipline will outlast the feature.
RevOps — Watch the second switch. Admin enablement is the default path, but Google puts an individual requirement beside it: the user must have Workspace smart features on. That is a per-user setting, which means this will work for part of the team and silently not for the rest, and the ones it fails for will conclude the feature does not exist rather than filing a ticket. Audit that setting before anyone announces this internally, and check your seat mix against the edition list while you are in there.
Grounding a draft only helps if the draft is asking a good question of the sources — point Gemini at a Notebook with a vague instruction and you get a vague summary with citations attached. Start from prompts built for framing a solution and building a proposal.
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