Google's AI Overviews just got bigger, and YouTube's search rankings just got smaller. Here's the data.
Two data points landed in the same quarter, and read together they tell a clearer story than either does alone. On August 28, 2026, Google confirmed that AI Overviews can now dynamically expand for queries where its systems judge a fuller answer useful, pushing traditional organic results further down the page. Separately, an SE Ranking analysis of the May 2026 core update found YouTube's share of Google's top-3 organic positions fell from 2.50% to 2.14%, while Reddit gained top-3 positions across essentially every niche tracked. Neither change is subtle, and both point the same direction.
What actually changed
| Change | What it does |
|---|---|
| AI Overview dynamic expansion (Aug 28, 2026) | A fuller AI-generated answer loads automatically for some queries, occupying more space before any ranked link appears |
| YouTube top-3 share: 2.50% → 2.14% (May 2026 core update) | YouTube links are appearing less often in the classic top-3 organic slots |
| Reddit gains top-3 across all tracked niches | A separate ranking-algorithm shift, not a display change, but pointing the same way |
The expansion is reversible in a specific, telling way: Google cancels the automatic expansion if a searcher has already scrolled past the compact version, which suggests real testing went into not disrupting someone already reading. That's a design detail, not a loophole; the expansion is still the default behavior most searches will see.
What this doesn't mean
A shrinking share of classic top-3 links is not the same as video losing relevance. YouTube content likely shows up more often through dedicated video SERP features that a top-3-link count doesn't capture at all, and our AI-search-citations guide already documented that YouTube remains the single most-cited domain across AI answer engines. Two different measurements, both real, both worth tracking, neither the whole picture on its own.
The actual takeaway
Treat classic organic ranking, AI Overview citation, and video-specific search features as three separate scoreboards rather than one number. Our zero-click search piece already makes the traffic-value case for leaning into the citation side specifically: fewer visits, but AI-search traffic converts roughly 5x better than a traditional ranked click. This data adds the other half of that argument, the ranked-link surface is measurably shrinking, so the citation surface is where the growing opportunity actually sits.
Where Thothium fits
Thothium exports the chapters, descriptions, and metadata both AI Overviews and YouTube's own Ask YouTube pull from to compose an answer, so a video is built for the surface that's actually growing, not just the one that's shrinking. It is in free alpha, and the form below gets you a key.
Frequently asked questions
Does the shrinking top-3 share mean YouTube video is losing to Google overall?
Not straightforwardly. The data shows YouTube thinning out of regular organic link positions, but video content also surfaces through dedicated video SERP features that a top-3-organic-link count doesn't capture. The honest read is that classic "rank a link" search is a shrinking piece of a bigger, more fragmented discovery picture, not that video traffic vanished.
Should I stop optimizing for traditional Google ranking?
No, but stop treating it as the only scoreboard. Ranking position, AI Overview citation, and video-specific search features are three separate surfaces now, each worth checking, and our own zero-click search piece already makes the broader case that citation traffic converts better than a ranked link's traffic anyway.
What triggers the dynamic AI Overview expansion specifically?
Google says its systems decide per-query when a fuller answer is useful, and the expansion is reversible: if someone has already scrolled past the compact Overview, Google cancels the automatic expansion rather than yanking the page out from under them. There's no published list of which query types trigger it.
Is Reddit's gain in the May 2026 core update related to this?
They're separate but overlapping stories. Reddit picking up top-3 positions across essentially every niche in the same update is a ranking-algorithm shift; the AI Overview expansion is a display-layer change to how much space an Overview occupies before any ranked link, including Reddit's, ever appears. Both push the same direction: less visible space for a plain ranked link.
Last updated September 5, 2026. Ranking-share data is from SE Ranking's analysis of the May 2026 Google core update; AI Overview expansion details are per Google's own August 28, 2026 confirmation. Both are subject to further platform changes.