🔍 Read the full analysis: AI Search Ads At Scale: Google’s Global Expansion on ThorstenMeyerAI.com
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TL;DR
Google said on October 28 that ads in its AI Mode search experience are expanding to 10 more countries, with ads also appearing in US follow-up questions. The rollout gives advertisers access to more AI-generated search interactions, but Google has not provided a separate opt-out, and independent research cited by the source found AI Overviews reduced website clicks while ad clicks showed no measurable change.
Google said on October 28 that it is expanding ads in its chat-style AI Mode search experience to 10 more countries and adding ads to follow-up questions in the United States. The change extends advertising into more AI-generated search interactions as Alphabet reported that Google Search and other revenue grew 12% in the third quarter, down from 17% in the previous quarter.
The new AI Mode markets are Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Google said Brazil, Mexico and the United Kingdom are planned for the fourth quarter of 2026. In the US, ads can now appear not only in an initial AI Mode response but also in follow-up questions during the same search conversation.
According to Google Ads Help, existing Search, Shopping and Performance Max campaigns can appear in these placements automatically. Advertisers do not have a separate targeting control or an opt-out for ads in AI answers, and performance is reported in aggregate. Google’s AI may also write short explanations alongside ads; advertisers cannot edit those explanations, according to the help page. Google says ads are labeled “Sponsored”.
Google’s search ads chief, Shashi Thakur, said the company was expanding ads in AI Mode and introducing ads for follow-up queries. Google also said AI Mode queries are, on average, three times longer than conventional searches. Its reported comparison of click-through rates between sponsored and unpaid product listings is based on internal US data from August 20 to September 3, 2026, and does not measure clicks to websites.
Infographic 01 · From test to global
The answer now carries the ad, in more places.
How Google moved ads into its AI answers in two years, where they show today, and the revenue pressure behind the move.
Where ads appear inside AI answers
Per Google’s help page and the 28 Oct post. The list “may not be exhaustive”.
Follow-up questions (“multiturn ads”): US only. Germany and the rest of the EU: not listed. Ads above or below AI Overviews can show wherever AI Overviews exist (200+ countries and territories).
Why now: Google Search & other revenue growth
Year over year, as reported by Alphabet. Bars scaled to 19%.
Q2 to Q3 2026: about +0.1%. Same months a year earlier: about +4.4% (my arithmetic). Google names exchange rates as the largest driver of the slowdown, and the “lower monetization” of AI Mode as one factor.
- 3 Oct 2024Ads inside AI Overviews go liveUS, mobile, after months of testing
- 21 May 2025Desktop in the US; first tests in AI ModeEnglish-speaking countries announced for later in 2025
- 20 May 2026New formats in testingConversational Discovery ads and Highlighted Answers, both with a Gemini-written “AI explainer”
- 28 Oct 2026AI Mode ads in 10 more countriesPlus “multiturn ads” in follow-up questions in the US; labeled “Sponsored”
- Q4 2026Planned: Brazil, Mexico, United Kingdom“Additional locales, including” these three
Sources: Google, 28 Oct 2026; Google Ads Help, accessed 29 Oct 2026; Google, 3 Oct 2024; Google, 21 May 2025; Google, 20 May 2026; Alphabet Q3 2026 release and the Q4 2025, Q1 2026 and Q2 2026 releases. “3× longer” is Google’s AI Mode report (US, May 2026). Quarter-on-quarter changes and bar scaling: Thorsten Meyer.
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Ads Follow Users Through AI Search
The expansion changes where ads can appear: a user asking a question, receiving an AI response and then asking for more detail may encounter advertising throughout that exchange. For marketers, the placements offer access to longer, conversational queries, while the automatic inclusion of existing campaigns means some advertisers may have limited control over how their ads appear in AI answers.
The development also matters to websites that depend on search visits. A working paper by Agarwal and Sen, based on a randomized experiment with 1,065 US users, reported that AI Overviews reduced clicks to websites by 39.8% when they appeared, while clicks on ads showed no measurable change. The finding is from a working paper, not a peer-reviewed study, and concerns AI Overviews rather than this specific AI Mode rollout. It nevertheless points to a potential difference between the effects of AI answers on publishers and advertisers.
For users, the practical distinction is between an AI-generated answer and a paid placement within or alongside it. Google says its ads carry the “Sponsored” label and do not influence the answer itself. That separation is Google’s stated policy; the source reports no independent audit confirming it.
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From AI Overviews to AI Mode
Google has been introducing advertising into AI search in stages. Ads in AI Overviews, the summaries shown above some conventional search results, began appearing for mobile users in the US in October 2024. Google brought them to desktop in May 2025 and began testing ads in AI Mode around the same time.
At Google Marketing Live in May 2026, the company also began testing formats called Conversational Discovery ads, which use Gemini to tailor ad text to a query, and “Highlighted Answers,” which can place an ad within an AI recommendation list. The October announcement extends the geographic reach of AI Mode ads and adds placements in US follow-up questions.
The rollout comes as Google’s search advertising growth has slowed. Alphabet reported $63.4 billion in Search and other revenue for July through September 2026, up 12% year over year, following growth of 17% in the prior quarter. Google chief business officer Philipp Schindler cited currency effects and said faster growth in AI Mode queries had affected revenue because those searches had lower monetization. The company has said overall query growth is at its highest level in five years.
“Ads will be clearly labeled as “Sponsored.””
— Google, in its advertiser guidance
Controls and Ad Separation Remain Open
Google has not provided a separate opt-out or targeting control for these AI placements, according to its Ads Help guidance. The source also reports that campaign results are shown in aggregate, leaving advertisers without a distinct performance breakdown for each AI answer placement. It is not clear whether Google will add more controls or reporting options.
Google says advertising does not affect the AI’s answer, but the source found no independent audit of that claim. The company’s click-through comparison concerns sponsored and unpaid product listings within AI Mode, not visits to external sites. The cited publisher experiment examines AI Overviews and cannot establish the effects of the new AI Mode placements.
As of October 29, 2026, Google’s help page lists 12 countries for ads in AI answers and says the feature is available in English. Germany and other European Union countries are not listed. The timing and terms of any broader European rollout remain unclear.
More Markets Planned This Quarter
Google has said it plans to bring AI Mode ads to Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. The rollout is already under way in the 10 newly announced markets, though the source does not give a country-by-country launch schedule.
Advertisers and publishers will be watching for details on reporting, campaign controls and how ads perform in conversational search. Google’s forthcoming rollout updates may clarify whether more languages or markets will be included. For users, the immediate cue remains the “Sponsored” label; the extent to which audiences can distinguish paid placements from AI-generated answers has not yet been independently assessed.
Key Questions
Where is Google expanding ads in AI Mode?
Google named Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. It plans to add Brazil, Mexico and the United Kingdom in the fourth quarter of 2026.
What changed for US users?
Ads can now appear in follow-up questions in AI Mode, not only in the initial response. Google says such ads are labeled “Sponsored.”
Can advertisers opt out of these placements?
According to Google Ads Help, existing Search, Shopping and Performance Max campaigns can participate automatically. The guidance cited by the source describes no separate opt-out or targeting control for AI answer placements.
Does Google’s evidence show that ads do not affect website traffic?
No. Google’s cited click-through comparison concerns sponsored and unpaid product listings within AI Mode. A separate working paper on AI Overviews reported 39.8% fewer website clicks when those summaries appeared and no measurable change in ad clicks, but it does not test this AI Mode rollout.
Are AI search ads available in Europe?
As of October 29, 2026, Germany and other EU countries were not on Google’s listed markets for ads in AI answers. Google has announced a planned UK rollout in the fourth quarter, but has not announced an EU launch in the source material.
Source: ThorstenMeyerAI.com
