The Great Decoupling

Why it matters: rising impressions with falling clicks is now a diagnosis, not a paradox — and the right response is completely different from the one a ranking loss calls for.

The Great Decoupling is the widening gap between impressions and clicks in Google Search Console: impressions keep rising while clicks stay flat or fall, because AI surfaces — chiefly Google AI Overviews — answer more queries directly on the results page. The term spread through the SEO community in mid-2025, and for informational content the pattern is fast becoming the default chart shape.

Where did the term come from?

The coinage is most commonly credited to SEO Darwin Santos, who named the pattern on X in late May or early June 2025 (PPC Land) — though accounts of the exact date and the chart he was reacting to conflict across sources, so “popularized mid-2025” is as precise as I’ll get.

Barry Schwartz’s Search Engine Roundtable coverage in the first days of June spread it, and Ryan Law’s Ahrefs post of June 17, 2025 cemented it, reporting that on Ahrefs’ own Search Console data the clicks–impressions correlation flipped from +0.425 in late 2024 to −0.352 in early 2025 (Ahrefs).

Google didn’t deny the pattern: at Search Central Live Warsaw in mid-June 2025, Martin Splitt said “if things are being shown in AI overviews, you will probably see less clicks”, with impressions likely up while “clicks are likely to stagnate or fall a little bit” (PPC Land).

What’s the evidence that clicks are falling?

The major studies agree on direction for informational queries — fewer clicks where AI answers appear — and disagree, sometimes wildly, on size. One row per study, with the method caveat kept next to the number, where it belongs:

Can the studies all be true at once?

Mostly yes — they measure different fractions. Ahrefs measures CTR at position 1 on keywords with AI Overviews; Pew and SparkToro measure panel behaviour across all searches; Semrush measures a keyword’s zero-click share before vs after an Overview appears; and Google talks about total click volume while queries multiply — on Alphabet’s Q2 2025 earnings call, Sundar Pichai told investors AI Overviews were driving over 10% more queries for the types of searches that show them (Search Engine Journal). Grow the denominator enough and total clicks can stay “relatively stable” while per-query CTR falls. My honest read: the direction is consistent — informational queries with an AI answer send fewer clicks — but the size of the effect is genuinely uncertain, and I’d rather flag that uncertainty than fake precision.

Is the Great Decoupling happening to my site?

Three Search Console metrics — position, impressions, CTR — separate decoupling from an ordinary ranking loss. Open the Performance report, filter to a non-brand query group, compare the last 28 days to the prior period, and read the triad:

1. Position stable + impressions stable or up + CTR down → AI-surface cannibalization. You still rank; the answer is being consumed in place. That’s decoupling.
2. Position dropped → a ranking loss. Different problem, different fix — content, links, or a core update, not AI surfaces.
3. Impressions dropped → a demand or indexing problem. Decoupling raises impressions; it doesn’t cut them.

Run the check per query group rather than site-wide, and split brand from non-brand: brand-navigational queries are least exposed to AI answers — someone searching your name clicks through regardless — so in aggregate they mask everything else.

Why can’t I see AI Overview traffic in Search Console?

Because Google doesn’t break it out — you can only infer it from the pattern above. AI Overviews and AI Mode traffic sits inside the “Web” search type with no filter (Google’s docs); AI Mode has counted toward the totals since June 16, 2025 (Search Engine Land).

The counting rules shape the charts: “An AI Overview occupies a single position in search results, and all links in the AI Overview are assigned that same position” (Google); an impression requires the link to scroll into view; and a URL appearing in both the Overview and the blue links counts as one impression, per John Mueller (Search Engine Land) — so no, Overviews aren’t inflating your impressions by double-counting. And since position reflects the topmost location (Google’s rule), an Overview citation can hold your average position steady while CTR craters.

We walk through the mechanics in how AI Overviews and AI Mode show up in Search Console — and when we queried the GSC API’s searchAppearance dimension for our own property on July 2, 2026, it returned zero rows: no AI-surface breakdown there either.

What does a site born decoupled look like?

Ours. In its first two weeks in the index, this site logged 160 impressions and 4 clicks — 2.5% CTR at an average position of 59.1, across 27 queries (our data). All four clicks landed on the homepage and look brand-navigational; every content page earned impressions with zero clicks, the bulk sitting at positions ~52–95. Two glossary stubs — our AI Mode and Google AI Overviews pages — pulled 61 impressions each on hot AI-topic queries at positions ~52 and ~76. Daily impressions ramped to 41 by day 5, then retreated to 4–7. One site’s experience, not a universal law — but where established sites experienced decoupling as a decline, a new site now meets it as its starting state: impressions arrive long before clicks do. Some publishers respond by keeping their content out of AI Overviews entirely — a trade-off with its own measurable costs.

Sources: SparkToro · Ahrefs — AIO CTR study · Ahrefs — 2026 update · Semrush · Pew Research Center · Google — Liz Reid · Google Search Console Help · PPC Land