Almost every AI-search statistic in circulation describes a US search. But whether Google even shows an AI Overview — and how many sources it cites when it does — changes sharply from one country to the next. We measured it across 15 markets and the six AI engines cloro monitors, over a 30-day window. Two things stand out: AI search is far less uniform than the "48% of queries" headlines suggest, and "cited by AI" means something completely different depending on which engine you ask.
Published July 5, 2026 · Updated July 28, 2026 · cloro monitoring corpus · 30-day window · ~61,000 sampled AI Overview results
67% – 93%
Among the countries where Google shows AI Overviews, the trigger rate ranges from 67% (Germany) to 93% (US, Austria) — a 26-point spread inside the "supported" markets alone.
~12 vs ~1
Citation depth is an engine trait, not a constant: ChatGPT backs an answer with ~12 sources; Gemini often cites just one. A single "AI citation" is not a comparable unit across engines.
Austria ≠ Germany
Same language, opposite behavior: Austria triggers an AI Overview 93% of the time, Germany 67%. Country, not language, is the unit that matters.
France: 0% → 70%
When we first published, France returned zero AI Overviews — it sat outside Google's launched markets. Google enabled them on 25 July 2026 and the rate hit 69.6% within a day, on the same prompt panel. A market can go from nothing to normal overnight.
"AI Overviews now appear on roughly half of Google searches" is the stat everyone repeats. It's a US number, and it hides the real story: among the markets where Google has switched AI Overviews on, how often they actually fire ranges from 93% (United States, Austria, Japan, Canada) down to 67% (Germany). The English-speaking markets cluster tightly at the top — US, Canada, Australia, and the UK all sit at 76% or above — while continental Europe is where the rate falls off.
The sharpest illustration is the German-speaking bloc. Austria (93%), Switzerland (82%), and Germany (67%) share a language but span a 26-point range. Whatever drives the difference, it isn't linguistic — so a brand that measures its AI visibility in one market and assumes the rest of the region looks similar is measuring the wrong thing.
Update — 28 July 2026: France switched on
Google now lists France and French in its availability documentation, and we caught the change in flight. On 25 July 2026 AI Overviews began appearing on French searches for the first time. Across the three complete days since (25–27 July), 69.6% of 730 sampled French searches returned an AI Overview, citing 8.3 sources on average.
France's row throughout this study — trigger rate, chart, and citation matrix — is that post-launch window. Every other market is the original 30-day window. We've kept the two apart rather than averaging them, because a rate measured across the switch would describe neither the old France nor the new one.
When this study first published, France was the one market in the sample that returned zero Google AI Overviews — and that wasn't an artifact of our corpus. Google did not offer the feature in France at all: its availability documentation listed the launched countries and languages, and France wasn't among them, consistent with the French and EU regulatory environment around Google's use of publisher content. The 0% was a documented rollout boundary, not a measurement gap.
Then it moved, and it moved as a switch rather than a dial. French AI Overviews went from nothing to 67.7% on their first day and have held near 70% since — no ramp, no gradual regional rollout. France now sits mid-table, between the UK (76%) and Poland (68%), in the same continental-European band as the markets it was excluded from weeks earlier.
The exclusion is still the more useful lesson, because it's the one that generalizes. Throughout it the non-Google engines answered French queries normally — ChatGPT cites ~13 sources per answer, Perplexity ~10, and Copilot ~5. "AI search in France" was a live surface long before Google's arrival; it just wasn't Google's. A market's AI visibility isn't Google's to define, and any team that had written France off for want of AI Overviews spent that time invisible on the engines that were answering all along.
How many sources an AI answer cites is often treated as one number. It isn't — it's a property of the engine, and for some engines it swings hard by market. Plotting three engines across all 15 markets (sorted by AI Overview trigger rate) shows the shape at a glance: ChatGPT holds a steady line, Perplexity runs almost flat, and Gemini collapses outside the English-speaking markets.
| Country | ChatGPT | Perplexity | AI Overview | AI Mode | Copilot | Gemini |
|---|---|---|---|---|---|---|
| Austria | 13.6 | 9.6 | 13.6 | 11.3 | 6.5 | 5.1 |
| United States | 12.5 | 9.8 | 10.2 | 12.2 | 5.0 | 6.6 |
| Japan | 12.3 | 9.6 | 8.0 | 7.9 | 4.2 | 1.0 |
| Canada | 12.0 | 9.5 | 12.9 | 17.8 | 4.4 | 4.8 |
| UAE | 12.6 | 9.4 | 7.0 | 5.0 | 4.2 | 1.9 |
| Brazil | 11.6 | 9.6 | 9.5 | 9.2 | — | 0.6 |
| Australia | 13.0 | 9.6 | 9.8 | 14.0 | 4.9 | 6.8 |
| Israel | 10.9 | 9.5 | 7.4 | 5.4 | 4.6 | 0.8 |
| Mexico | 12.3 | 9.6 | 10.7 | 10.1 | 3.3 | 4.7 |
| Switzerland | 12.4 | 9.3 | 12.7 | 10.0 | 6.7 | 2.3 |
| Denmark | 11.6 | 9.2 | 8.3 | 5.7 | 4.5 | 1.1 |
| United Kingdom | 11.4 | 9.3 | 10.3 | 13.3 | 5.0 | 6.7 |
| France | 12.7 | 10.2 | 8.3 | 14.4 | 5.1 | 0.0 |
| Poland | 11.7 | 9.3 | 9.6 | 6.1 | 4.5 | 1.0 |
| Germany | 11.6 | 9.5 | 11.2 | 8.8 | 4.9 | 1.0 |
Three patterns fall out of it:
The practical consequence: being "cited by AI" is not one achievement. Earning a citation where an answer draws on a single source (Gemini in Germany) is worth far more per slot than being one of a dozen (ChatGPT in Austria). Comparing raw citation counts across engines, without normalizing for how many sources each one pulls, produces a misleading scoreboard.
One market's AI visibility tells you almost nothing about the next — not even within a shared language. Measure AI Overview presence and citations per target country, not per region, and don't extrapolate a US baseline onto Europe.
Normalize by engine. A citation is 1-of-~1 in Gemini-Germany and 1-of-~12 in ChatGPT-Austria; those are not the same win. Weight citation share by each engine's sourcing depth in the market you care about, or your dashboard will over-reward the engines that simply cite more.
Don't hardcode "AI Overview always present" — or "never present." It fires only two-thirds of the time in Germany, and France went from a hard 0% to ~70% on a single day. Detect the block per response, not from the country code. And remember Google's surfaces aren't the whole of AI search — ChatGPT and Perplexity were answering in France the entire time Google wasn't.
Figures come from cloro's own monitoring corpus, queried over a 30-day window (~61,000 sampled AI Overview results across the 15 markets). Trigger rates are measured on Google's AI Overview surface; only countries with more than 200 sampled results are reported. Citation counts are the mean number of cited sources per answer, per engine, per market. A "—" marks a surface that returned no result in that market during the window.
The corpus is customer AI-visibility monitoring — conversational, branded, and multilingual prompts — so read the absolute trigger rates as directional and the cross-market comparisons as the finding (relative differences are robust to prompt mix in a way absolute rates aren't).
France is measured on a later window than the other 14 markets, and every France figure on this page reflects it. At publication France returned a flat 0% — Google did not offer AI Overviews there. Google enabled them on 25 July 2026, so France's row was re-measured over 25–27 July 2026 (730 sampled AI Overview results, 269 prompts, same panel and same surface as before) and updated here. The two windows are reported side by side rather than blended: a rate averaged across the switch would describe neither period. Read France's row as current and the other 14 as the original window until the next full-window refresh brings them back onto one basis.
cloro. (July 5, 2026). AI Overviews Around the World: Trigger Rates. cloro Research. https://cloro.dev/research/ai-overviews-around-the-world/
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