Fill with Gemini now cites the web source behind each Sheets cell
Google Sheets shows the web sources Gemini used in each cell it fills. A request now covers up to 3,000 cells.
Google Sheets now shows which web pages Gemini used for each cell it fills. The same update raises the limit to 3,000 cells per request.
Google announced the change in a Workspace Updates post on Oct. 28, 2026. Google says the sources let people audit, verify and cross-reference outputs.
Each Cell Now Lists the Web Pages Behind It
Gemini now attaches the exact web sources it referenced to each cell the AI function fills. The sources appear in Google Sheets on the web only.
Requests Can Cover 3,000 Cells
Google expanded capacity to up to 3,000 cells per request. The upgraded processing also gives faster responses and more consistent results from one cell to the next.
Google says Fill with Gemini performs up to 55 times faster than manual entry on a 500-cell task. The figure comes from an internal Google study of 95 participants who compared manual entry with Fill with Gemini on that task. The study used English prompts and English-language users.
Rollout Began Oct. 20
The rollout is gradual and can take up to 15 days to become visible. It started Oct. 20, 2026, for Rapid Release and Scheduled Release domains.
The feature is available on Business Standard and Plus, Enterprise Standard and Plus, and consumer Google AI Pro and Ultra. It also comes with the Google AI Pro for Education add-on and the AI Expanded Access add-on.
It is on by default for users who have Gemini in Sheets enabled. Open Gemini for Sheets from the side panel with the “Ask Gemini” spark button at the top right of Sheets.
Our View
We think the detail that matters most is that each source attaches to its own cell. A request can now fill 3,000 cells. One list of sources for that many values would leave a reader hunting for which page backed which number. A source on each cell lets an analyst or a team lead start from a value that looks wrong and go straight to the page it came from.
That changes who can review a filled column. A colleague who did not write the prompt can still check a value. The evidence sits beside it. Reviewers need Sheets on the web to see the sources.
The larger request size raises the stakes of that check. Filling 3,000 cells in one pass produces far more values than anyone will read closely. The citations save time only for teams that decide in advance which cells to open, such as the outliers or the figures that feed a report, and then open them.