The second screen displays a Google logo at the top, followed by the same video, a longer summary, and a row of source cards. The first card comes from kcra.com.

The third screen, headed "Explore more stories," groups short summaries under sub-topic headlines. Each summary is followed by source links and a short description of the linked coverage.

How It Fits With Discover's Other AI Features

Google rolled out AI previews on trending topics in Discover in October 2025. Those previews expand to show more information, with links to the web. The launch went live in the U.S., South Korea, and India.

In the new example, the summary attaches to a single video card, and tapping the button opens an overview with additional links.

Search Console, meanwhile, has a generative AI performance report for Discover. Google says the report rolled out to all websites worldwide on Aug. 31, although the help page still says not all properties have access. As of Sept. 18, the help page stated that the report counts impressions of links shown in "generative AI features in Discover." It groups data by page, country, and date. Impressions are the only metric the page describes. The page does not list which features count, and it notes that experiments in Search Labs are excluded.

The announcement does not say whether this test runs through Search Labs.

Why This Matters

Dive deeper gives users one more thing to tap on a Discover card. In the example, the card is a YouTube video, and links to other coverage sit in the overview behind the button rather than on the card itself.

For publishers, measurement is the open question. Search Console's Discover AI report offers no breakdown by feature. If impressions from a Dive deeper overview count toward the report, they would mix in with those from other AI features.

Looking Ahead

Stein said Google will experiment with multiple designs in the weeks ahead, so both the button and the overview may change. The post gives no timeline for expanding beyond videos.