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TL;DR
Google announced on October 28 that ads in AI Mode are expanding to 10 more countries and that U.S. users will see ads in follow-up questions. The move comes as Google Search advertising growth slowed to 12% in the third quarter, and as research cited in the source found AI Overviews reduced website clicks while ad clicks showed no measurable change.
Google is expanding ads in AI Mode to 10 additional countries and adding ads to U.S. follow-up questions, bringing commercial placements further into its conversational search answers. The October 28 announcement comes as Alphabet reported that Google Search and other advertising revenue grew 12% in the third quarter, down from 17% in the previous quarter.
The newly included countries are Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Google said it plans to add Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. In the United States, ads can now appear not only in an initial AI Mode response but also in answers to follow-up questions.
Google describes AI Mode as a chat-style search experience, distinct from AI Overviews, the generated summaries that appear within ordinary search results. The company says ads in AI answers are labeled “Sponsored” and do not affect the answer produced by its AI. That separation is Google’s stated policy; the source material reports no independent audit verifying how the system handles that boundary.
For advertisers, the change is integrated into existing campaigns rather than offered as a separate placement with its own controls. Google’s Ads Help information says eligible Search, Shopping and Performance Max campaigns can participate automatically, with no separate opt-out or targeting setting. Reporting is aggregated, and Google may generate short explanatory text beside an ad that advertisers cannot edit.
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 Into AI Chats
The expansion changes where a commercial message can appear: an ad may accompany an answer to a question and then appear again as a person continues the conversation. For users, that makes it important to distinguish paid placements from generated guidance, especially when a response offers product suggestions alongside practical information.
It also matters to businesses that depend on search traffic. A randomized experiment involving 1,065 U.S. users, cited in the source as a 2026 working paper by Agarwal and Sen, found that AI Overviews reduced clicks to websites by 39.8% when the summaries appeared, while clicks on ads showed no measurable change. That result is specific to the study and its setup; it does not establish that every site will lose that share of traffic or that the same effect applies to AI Mode.
The findings point to a possible split in the consequences of AI search: fewer visits to some websites, without a corresponding measurable drop in ad clicks in that experiment. That could affect publishers whose income depends on search referrals, while advertisers continue to reach users inside Google’s results. The study does not, by itself, establish the causes of Google’s revenue trend or predict future outcomes.
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The Search Ad Rollout So Far
Google’s rollout has developed in stages. Ads in AI Overviews began appearing for mobile users in the United States in October 2024, according to Google’s earlier announcements. In May 2025, the company extended them to desktop and began testing ads in AI Mode. At Google Marketing Live in May 2026, it introduced tests of additional formats, including conversational ads with text tailored by Gemini and ads highlighted within AI recommendation lists.
The October announcement extends that effort geographically and into more turns of a conversation. Google says AI Mode queries are, on average, three times longer than conventional searches. It also reported that click-through rates for sponsored and unpaid product-list items in AI Mode were similar in internal U.S. data from August 20 to September 3, 2026. That comparison covers product-list interactions within AI Mode, not clicks to external websites.
The financial backdrop is more complicated than a single growth figure. Alphabet reported $63.4 billion in Google Search and other revenue for July through September, with year-over-year growth slowing to 12% from 17% in the preceding quarter. Chief business officer Philipp Schindler cited exchange rates as the largest factor and also pointed to lower monetization of AI Mode searches. The company’s results and comments connect the slowdown to several factors, not solely the new AI format.
“The strong growth in AI Mode queries had an impact because of the lower monetization we were seeing in AI mode.”
— Philipp Schindler, Alphabet chief business officer, on the earnings call
What the Rollout Does Not Settle
Several questions remain open. Google says ads do not influence the AI’s answer, but the source material identifies no independent audit confirming that claim. The company has also not described a separate advertiser opt-out for these placements; its help information says eligible existing campaigns can take part automatically, with results reported in aggregate.
The cited click study concerns AI Overviews, not the newly expanded AI Mode ads, and its results should not be treated as a forecast for every publisher or advertiser. Google has shared internal comparisons of ad and unpaid product-list click-through rates, but those figures do not show whether users click through to websites, how revenue per query compares across formats, or how performance varies by category.
As of October 29, the source material says Google’s help page listed 12 countries for ads inside AI answers and specified English-language availability. Germany and other European Union countries were not listed. The planned fourth-quarter additions of Brazil, Mexico and the U.K. are announced plans, not completed launches.
More Markets and Usage Data
Google’s stated next rollout step is to add ads in AI Mode in Brazil, Mexico and the United Kingdom during the fourth quarter of 2026. The company has not supplied a specific launch date for those markets in the material available as of October 29. The listed expansion also leaves questions about when other regions, including the European Union, might be included.
Advertisers and publishers will be watching for clearer performance reporting as these placements spread. Current campaign information says reporting is aggregated, which limits what advertisers can isolate about ads shown in AI answers. Publishers, meanwhile, will want data that separates changes in visits to their sites from changes in advertising activity inside Google.
Further evidence will be needed to judge the effects on users and businesses: independent scrutiny of the separation between ads and AI answers, more detail on how placements are selected, and research that measures clicks and revenue across both AI Overviews and AI Mode. For now, Google has confirmed the rollout and its labeling policy, but the broader effects on referral traffic and advertising returns remain developing.
Key Questions
Where is Google expanding ads in AI Mode?
Google announced expansion to 10 countries: Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. It said Brazil, Mexico and the United Kingdom are planned for the fourth quarter of 2026.
What changed for U.S. AI Mode users?
Google said ads can now appear in follow-up questions in AI Mode, not only alongside an initial response. It says these ads will carry a “Sponsored” label.
Can advertisers opt out of ads in AI answers?
Google Ads Help information cited in the source says eligible Search, Shopping and Performance Max campaigns can participate automatically, with no separate opt-out or targeting control. Performance information is reported in aggregate.
Does research show that AI search reduces website clicks?
A 2026 working paper cited in the source reports that, in a randomized experiment with 1,065 U.S. users, AI Overviews reduced website clicks by 39.8% when they appeared. The study found no measurable change in ad clicks. Those results concern the experiment and AI Overviews; they do not establish the effect of the new AI Mode rollout on every site.
Has Google independently verified that ads do not shape AI answers?
Google says ads do not influence its AI answers, but the source material reports no independent audit verifying that claim. The company says ads are labeled “Sponsored.”
Source: ThorstenMeyerAI.com
