Published: September 21, 2026
Google is testing a button inside Discover called "Dive Deeper" that does something no earlier Discover feature has done: instead of sending the tap to the publisher's article or video, it opens a Google-hosted, AI-generated summary of the topic instead. Robby Stein, Google's VP of Product for Search, disclosed the test on X on September 18, 2026, saying Google is "experimenting with a new way to make exploring a topic and discovering related web content easier in Discover." For any site that leans on Discover for a meaningful share of its Google traffic, that is worth understanding now, while it is still a test and not yet a shipped feature.
What Google Is Actually Testing
The mechanics are simple and, for publishers, uncomfortable. Discover cards are getting a second tap-target alongside the usual link to the article or video. Tap "Dive Deeper" and you do not land on the publisher's page — you land on a short, AI-generated topic overview that Google itself hosts, with small, truncated link cards underneath pointing to related coverage, community reaction, and the original reporting. Stein's own framing on X was low-key ("experimenting with a new way"), and outlets covering the test, including Search Engine Journal and Search Engine Roundtable, confirm it is starting with video cards first, with Stein saying more design variants are coming in the weeks ahead.
What Google has not said matters as much as what it has: no rollout timeline, no named test markets, and no mechanism for publishers to opt out. It is an early-stage experiment, not an announced product change, and the honest framing for anyone advising clients is "Google is testing this," not "Google has launched this."
How Dive Deeper Differs From AI Overviews in Search
AI Overviews already sit on top of regular Search results and summarize an answer before the ten blue links below it — the publisher link is still there, one scroll away, and still gets some of the traffic that would otherwise go to a click. Dive Deeper is a different shape of the same idea, and arguably a more direct one: the button itself is the alternative to the publisher click, not a layer above it. Where AI Overviews compete with organic listings for attention, Dive Deeper competes directly with the Discover card's own primary link, on the same card, one tap away. Android Authority's coverage frames it plainly as inserting an AI layer "between you and the reporting it recommends," and ppc.land's reporting describes the same mechanism: tap the new button, and the destination is Google's own AI overview, not the publisher.
Why This Test Matters More Than It Looks
Discover is not a minor traffic channel for the sites it favors. Press Gazette reported in August 2025, using Chartbeat data covering almost 2,000 global news and media sites, that 68% of the Google traffic to those sites came from Discover rather than traditional search — a shift the article says accelerated after Google expanded its rollout of AI Overviews (Press Gazette). That figure is more than a year old and describes news publishers specifically, so read it as a directional signal rather than a current benchmark for every site. Even so, that concentration is exactly why a feature testing an AI-hosted alternative to the Discover click is a bigger deal than a typical UI experiment: for a lot of publishers, Discover already is their Google traffic, and this test inserts a Google-owned destination directly into that flow.
It also fits a pattern this blog has tracked before. AI-generated answers increasingly sit between a query and a click, whether that is an AI Overview in Search or a chat-style answer in a different search product — the mechanism keeps recurring because it keeps testing well for the platforms running it, even as it reduces the number of clicks that reach the original source.
What To Do About This Right Now
Because this is a test with no confirmed rollout, the right response is preparation, not panic. Three things are worth doing today:
- Check your Discover share. If Search Console shows Discover already sending a large slice of your Google traffic, you have more at stake here than a site that gets most of its traffic from organic search, and it is worth watching this test closely as it evolves.
- Don't restructure content around a feature that hasn't shipped. Google has given no opt-out and no market list — there is nothing to "optimize for" yet, and reacting to an early test with major content changes is premature.
- Keep pushing for direct citation and brand mentions, not just clicks. If Discover traffic becomes less reliable over time, being the source an AI summary names and links to (rather than one of several truncated cards under it) is the more durable position — and it's the same discipline that matters for AI Overviews and AI chat answers generally.
Google will very likely change the design, the visibility, or the scope of this test before anything ships broadly — Stein said as much himself. We'll cover it again here if and when that happens with something concrete to report, rather than treating a Friday test announcement as a finished product.
