Fill with Gemini’s web citations arrive cell by cell

Google’s [October 28 notice](https://workspaceupdates.googleblog.com/2026/10/fill‑with‑gemini‑now‑provides‑cell‑level‑citations‑for‑web‑sources‑and‑supports‑larger‑requests.html) says values generated with the AI function now carry web sources for each cell in Google Sheets on the web. For a cell summarising a product specification, inspect whether the cited page supports that value for the intended product version and date. A link makes the origin easier to inspect; its presence does not establish that the value is correct. For calculations built from generated values, OpenTools’ [spreadsheet‑tools guide](https://opentools.ai/resources/best‑ai‑spreadsheet‑tools) recommends a small hand‑checked sample and reconciling a known total. That is general validation guidance, not a test of Gemini’s outputs.

The [update](https://workspaceupdates.googleblog.com/2026/10/fill‑with‑gemini‑now‑provides‑cell‑level‑citations‑for‑web‑sources‑and‑supports‑larger‑requests.html) supports up to 3,000 cells per request. Rollout began October 20, with up to 15 days for visibility, by default for users with Gemini in Sheets enabled. Original explanatory diagram by OpenTools Team; not a Google Sheets interface or example output.