Google's AI Overviews Now Expand Themselves — and AI Mode Is Moving In

Google has started expanding some AI Overviews automatically, without the "Show more" click that used to gate the full answer. When it triggers, the complete AI response renders at the top of the page, an "Ask anything" follow-up box loads beneath it, and the list of web links begins further down than it did before. Google confirmed the behaviour on 28 August 2026, describing it as a dynamic experience that fires "for topics where our systems determine it's most useful for people."

Key takeaways

• The change is a layout and interaction change, not a ranking change. Nothing published so far suggests Google altered how sources are selected or cited — only how much of the answer loads before you scroll.
• The behaviour has a shape: it has been observed on desktop only, with definitional queries triggering it most reliably. The same terms still return truncated overviews on mobile.
• It arrived nine days after Google began rolling Generative UI out of AI Mode and into AI Overviews. Two AI Mode behaviours have now migrated to AI Overviews inside a fortnight.
• The migration runs toward the bigger surface. AI Overviews passed 2 billion monthly users in 2025; AI Mode surpassed 1 billion monthly active users as of Alphabet's Q2 2026 remarks.
• The most-quoted click figure — 8% of visits click a traditional result when an AI summary is present, versus 15% without — comes from Pew Research Center data collected in March 2025, seventeen months before this interface existed.
• Google's counter-position is that AI features in Search are "sending billions of clicks to websites every week," and that AI Overviews monetise at the same rate as traditional results. Neither side has published the number that would settle it.

What exactly changed in Google's AI Overviews?

Until now, an AI Overview loaded as a truncated block with a "Show more" control underneath. Seeing the whole answer was a deliberate act. Users who wanted links could ignore the block and scroll to the results, which sat a predictable distance down the page.

For some queries, that gate is gone. The overview renders in full on load. Directly beneath it sits the "Ask anything" box — the conversational continuation field that has been AI Mode's defining element since launch. Web results follow after both.

Two details from Google's confirmation matter more than the headline:

It is selective, not global. Google's wording — "for some queries" and "for topics where our systems determine it's most useful" — describes a triggered behaviour, not a new default. Google has not disclosed what share of queries qualify, what signals fire the trigger, or whether the share will grow. Any claim you read about a specific percentage of affected queries is currently an estimate, not a disclosure.

It yields to intent. If a user has already started scrolling past the overview, the expansion is cancelled so their reading position is not thrown. That is a small piece of engineering with a large implication: Google is treating the scroll-past as a signal that this particular user wants links, and is declining to interrupt them. The feature is designed around the assumption that most users are not scrolling past.

It has a visible shape Google did not describe. Google scoped the behaviour by topic and said nothing about device or query type. Independent hands-on testing has been more specific on both counts. Android Authority reported seeing the expansion only on desktop — "the same set of search terms still returns truncated AI Overview summaries on mobile" — and found that asking desktop Search to define a term returns an expanded overview essentially every time. The initial observation, from the SEO agency Nectiv, was a search for a single word: algorithmic.

That pattern is worth taking seriously but not as settled fact. It is reproducible observation from outside Google, not a disclosure, and a rollout that is desktop-first is not the same as a rollout that is desktop-only. Treat the device split as the current state of a moving feature.

Google's stated justification is research-based — that users find Search more helpful under the dynamic experience and engage in deeper follow-up exploration. The supporting research has not been published.

Is Google turning AI Overviews into AI Mode?

Functionally, the two surfaces are converging, and they are converging in one direction.

Read the rows in isolation and each is a minor product update. Read them together and they describe AI Overviews absorbing AI Mode's interface one component at a time: first the generated interactive layer, then the full-length answer, then the conversational follow-up. What remains distinct about AI Mode is mostly its query fan-out depth and its dedicated tab — not what a user sees when the answer arrives.

Here is how the two surfaces now compare:

The practical answer to the question is: not formally, but the distinction is thinning. If you have been treating AI Mode as a separate optimisation problem to solve later, the deadline just moved — because the behaviour is arriving on the surface your customers already use by default.

How much further down do organic links sit now?

Further, and by a variable amount. That variability is the part worth planning around.

Before this change, the vertical position of the first organic link was reasonably stable per query type — a truncated overview occupies a fairly consistent height. Now the offset depends on how long the model's full answer runs for that specific query, plus the height of the "Ask anything" box. A three-paragraph answer and a twelve-paragraph answer push results down by very different amounts, and the same query can produce different lengths over time.

What that means concretely:

• Position in the ranked list no longer maps cleanly to position on the screen. Ranking first is a claim about order, not about pixels. It always was, but the gap between the two has widened.
• Above-the-fold organic visibility is no longer something you can assume on desktop for any query that shows an expanded AI Overview. Testing has reported the expanded overview filling the entire browser window, so reaching the first web link takes a deliberate scroll. Mobile, where the overviews still load truncated, is so far unaffected — which is the opposite of what you would expect, and worth watching, because mobile is the larger share of Search traffic.
• Search Console cannot show you this. Impressions are not broken out by whether an AI Overview was present, let alone whether it was expanded. There is no report to pull. Any measurement you do here is inference from CTR movement on queries you already know trigger overviews.

Does an expanded AI Overview actually cost you clicks?

This is where most coverage of the change reaches further than the evidence supports, so it is worth separating what is measured from what is assumed.

What the strongest independent study found. Pew Research Center analysed 68,879 Google searches from 900 U.S. adults who shared their browsing data in March 2025. About 18% of those searches produced an AI summary, and 58% of participants encountered at least one. The click figures:

The caveat nobody attaches to it. That data is from March 2025. It predates the auto-expansion by roughly seventeen months, and it predates Generative UI in AI Overviews entirely. It measures per-visit click rates, not per-session outcomes, and it does not tell you whether the same users returned via a different route. It is the best public evidence available, and it is evidence about an older version of the product. Treating it as a live measurement of today's interface is a stretch.

What Google says. In Alphabet's Q2 2026 earnings remarks, the company stated it is "sending billions of clicks to websites every week through AI features in Search," and that AI Mode is driving an incremental increase in overall Search queries. Search and Other advertising revenue grew 17% that quarter, and 19% the quarter before. Google has also said AI Overviews drive over 10% more queries globally for the query types that show them, and that AI Overviews monetise at the same rate as traditional search results.

The honest reading. Both things can be true. Total clicks to the web can grow while the click rate per query falls, if the number of queries grows faster. Google reports the absolute number; publishers experience the rate. Neither party has published the metric that would resolve it — clicks per query, per surface, over time — and until one does, anyone stating a precise traffic impact from this specific change is estimating.

What is not in dispute: the surface area available to a web link shrank, and the surface area available to a generated answer grew.

Why the bigger surface is the one that matters

There is a strategic error worth avoiding here, and it comes from watching the wrong product.

AI Mode gets the coverage because it is the visibly novel thing. But AI Mode requires a user to choose it. AI Overviews arrives whether or not the user asked, on the results page they already default to, at more than double the monthly reach. When a behaviour proves out in AI Mode and then ships into AI Overviews, it stops being an experiment a minority opted into and becomes the default experience of the general search population.

That is exactly the pattern the last two weeks demonstrate. Generative UI was an AI Mode feature; it is now rolling out in AI Overviews globally in English. Full-length answers with a conversational follow-up were AI Mode's format; they now fire automatically on the main results page for some queries.

The planning implication: treat AI Mode as a preview of the AI Overviews roadmap. Features that land there have a demonstrated path to the surface with 2 billion users. Watching AI Mode is not about optimising for AI Mode — it is about seeing what standard Search will do next.

This mirrors a pattern we covered when Google shipped its Preferred Sources button: a change presented as a small user control that quietly redistributes where attention lands on the results page.

What should site owners actually do about it?

Nothing here calls for panic, and nothing here is fixed by a technical change alone. The realistic responses:

The last row deserves emphasis because it is the least discussed. Summarisation competes with your content. Generative UI competes with your product. A mortgage calculator rendered inside the results page does not need to cite the mortgage calculator site it replaced.

If you want a concrete starting point, run your domain through the AI crawler checker to confirm which AI systems can reach your pages, then set up the AI search KPIs that still mean something when clicks per query are falling but total queries are rising.

Frequently asked questions

Why did my AI Overview expand automatically?

Because Google's systems classified your query as one where the full answer is more useful than a truncated one. Google described this as dynamic expansion "for some queries" and "for topics where our systems determine it's most useful for people." It is selective and Google has not disclosed the triggering signals, so the same query may or may not expand for a different user or at a different time.

Can I turn off the auto-expanding AI Overview?

There is no user setting to disable it, but there is one documented way to stop it in progress: if you begin scrolling past the overview before it expands, Google cancels the expansion so you do not lose your place. That is a behavioural escape hatch, not a preference toggle.

Does this affect mobile search too?

Not so far. Independent testing has found the auto-expansion on desktop only — the same searches that expand on a desktop browser still return a truncated overview with a "Show more" control on mobile. Google's own statement did not mention device at all, so this is an observed pattern rather than a stated boundary, and it could change without an announcement.

Which searches trigger the expanded overview?

Google says only that it fires "for some queries" and has not published the signals. The clearest observed pattern is definitional intent: asking desktop Search to define a term has been found to return a fully expanded overview consistently. That fits the stated logic — for a "what does X mean" query, the full answer is the useful response, and there is little a user would scroll for.

Does auto-expansion change which sources Google cites?

There is no evidence that it does. Everything Google and the trade press have described concerns presentation — how much of the answer loads and what appears beneath it. Source selection, citation behaviour and ranking were not part of the announcement. Treat any claim that this change altered which sites get cited as unverified.

Is AI Mode replacing AI Overviews?

No — the flow is running the other way. AI Mode features are migrating into AI Overviews: Generative UI began rolling out there on 19 August 2026, and the auto-expanding answer with an "Ask anything" box followed at the end of the month. AI Overviews is the larger surface, at over 2 billion monthly users against AI Mode's 1 billion monthly active users, so features tend to graduate toward it.

How do I know if my pages are being cited in AI Overviews?

Search Console does not break out AI Overview impressions or citations, so there is no first-party report to pull. The practical approach is a combination: track CTR on the query set you know triggers overviews, monitor branded and unbranded mentions in AI answers directly, and confirm your pages are actually reachable by AI crawlers in the first place. Our guide to AI search visibility covers why clicks and brand demand have decoupled and what to measure instead.

Where this leaves you

The button that used to sit between a user and a full AI answer is gone for some queries, and the conversational field that used to live in a separate tab now loads on the main results page. Taken alone, that is a UI tweak. Taken with the Generative UI rollout nine days earlier, it is AI Overviews becoming the surface where Google ships its AI search ambitions — the one 2 billion people see without opting in.

The work does not change much: be reachable, be extractable, be the source worth citing. What changes is the measurement. If your reporting still treats organic sessions as the whole picture, it will keep telling you a story about ranking losses that are actually layout changes.

Start with the two things you control today. Confirm AI crawlers can reach you with the crawler checker, then read how Google's AI search actually works so the next change on this surface reads as a pattern rather than a surprise.