🔍 Read the full analysis: AI Search Advertising: Google’s Push Beyond Traditional Results on ThorstenMeyerAI.com
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TL;DR
Google announced on October 28 that ads in its chat-style AI Mode are expanding to 10 more countries, with U.S. ads also appearing in follow-up questions. The move comes as Google Search advertising growth slowed to 12% in the third quarter; the effects on website traffic and the separation between ads and AI answers remain important questions.
Google is expanding ads in its AI Mode search experience to 10 additional countries and introducing them in U.S. follow-up questions, extending advertising into more parts of conversational search. The October 28 announcement came as Alphabet reported that Search & other revenue grew 12% year over year in the third quarter, down from 17% in the previous quarter.
The new markets for ads in AI Mode 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 United States, ads can now appear not only in an initial AI Mode response but also in answers to follow-up questions.
Google’s announcement covers two related search features. AI Overviews are summaries shown within conventional search results; AI Mode is a separate, chat-style experience that supports longer queries and follow-ups. Google says ads in AI answers will carry a “Sponsored” label and will not affect the AI’s own answer. The latter is Google’s statement; the supplied material does not identify an independent audit of it.
Advertisers do not get a separate opt-in process for these placements, according to Google Ads Help. Existing Search, Shopping and Performance Max campaigns can participate automatically, with no separate targeting or opt-out described. Performance is reported in aggregate, and Google’s AI-generated short explanations alongside ads cannot be edited by advertisers, the help material says.
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 Enter More Conversational Searches
The change puts commercial results closer to answers that may already address a user’s question. In Google’s example to advertisers, someone asking why a pool has turned green receives advice about testing and cleaning the water, alongside an ad for a pool vacuum. That illustrates the format Google is promoting: an ad can appear within the same search experience as a synthesized answer, rather than only among conventional links.
For advertisers, wider availability means existing campaigns may appear in AI Mode without a separate campaign setup. But the reported controls are limited: advertisers cannot target these placements independently or opt out, and reporting is aggregate. Google also says AI Mode queries are, on average, three times longer than traditional searches. That is the company’s characterization of user behavior, not an independent finding in the supplied material.
For publishers, the central concern is whether an answer reduces visits to websites while advertising continues to reach search users. A 2026 working paper by Agarwal and Sen reports that, in a randomized experiment involving 1,065 U.S. users, AI Overviews reduced clicks to websites by 39.8% when they appeared, while clicks on ads showed no measurable change. The result is limited to that study and does not establish what will happen across all searches or markets. It nonetheless highlights a potential imbalance: fewer site visits may not mean fewer ad interactions.
Users, meanwhile, may have to distinguish sponsored placements from generated answers in a more blended interface. Google says the “Sponsored” label identifies ads. Whether users consistently notice it, and how they interpret the relationship between an ad and the answer around it, are not established by the announcement.
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From AI Overviews to Follow-Ups
Google has been adding advertising to AI-based search in stages. Based on the company’s posts, ads in AI Overviews began appearing for U.S. mobile users in October 2024. In May 2025, Google extended them to desktop and began testing ads in AI Mode. At Google Marketing Live in May 2026, it described tests of Conversational Discovery ads, which use Gemini to tailor ad text to a question, and Highlighted Answers, where an ad can appear within a list of AI recommendations.
The October announcement expands AI Mode ads geographically and into later turns of a U.S. conversation. The financial setting is a slowdown in reported Search & other growth: Alphabet reported revenue of $63.4 billion in July through September, up 12% year over year, compared with 17% growth in the prior quarter. Search remained a major part of Alphabet’s business, but the quarterly growth rate was lower.
On Alphabet’s earnings call, chief business officer Philipp Schindler cited currency movements as the largest factor affecting growth and also pointed to lower monetization of AI Mode searches. He said strong growth in those queries affected results because “of the lower monetization we were seeing in AI mode.” This is the company’s explanation of its financial performance, alongside other factors it mentioned, including retail advertiser pressures and changes in media and entertainment spending.
““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
Traffic, Labels and Market Reach
It is not yet clear how the expanded placements will affect website traffic, advertiser returns or publisher revenue across the newly added markets. The cited experiment examined AI Overviews with U.S. users; it does not directly measure the effect of the newly announced AI Mode placements or establish results in other countries.
Google says ads do not influence the AI-generated answer, but the supplied material includes no independent audit of that claim. The company’s internal comparison of sponsored and unpaid product-listing click-through rates in AI Mode also has a limited scope: Google cited U.S. data from August 20 to September 3, 2026. It does not measure clicks to websites.
Google’s help page lists 12 countries for ads in AI answers as of October 29, according to the source material, and says the feature is in English. Germany and the rest of the European Union are not listed. The timing and terms for any later expansion beyond the markets Google named remain unspecified.
Expansion and Performance Data
Google has said that Brazil, Mexico and the United Kingdom are planned for the fourth quarter of 2026. Its rollout and help-page updates should clarify which markets, languages and search formats are included as the expansion proceeds.
Advertisers and publishers will be watching for more information on performance measurement, campaign controls and the effect on referrals to websites. Google’s current description says results are reported in aggregate and that campaigns cannot separately opt out. More detailed, independently verifiable data would help establish whether conversational ads change click patterns or business outcomes beyond the specific measurements cited so far.
For users, the immediate practical cue is Google’s stated “Sponsored” label. The rollout will show how that label appears in AI answers and follow-up responses, while questions about its visibility and the influence of advertising on the surrounding experience remain open.
Key Questions
Where is Google expanding ads in AI Mode?
Google announced ads in AI Mode for 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 changes for U.S. users?
Ads can now appear in answers to follow-up questions in AI Mode, not just in responses to the initial query. Google says ads in AI answers will be 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 supplied material says advertisers have no separate targeting option or opt-out and receive aggregate reporting.
Does research show that AI answers reduce website clicks?
A 2026 working paper by Agarwal and Sen reports that AI Overviews reduced website clicks by 39.8% in a randomized experiment with 1,065 U.S. users when those summaries appeared. The study also reported no measurable change in ad clicks; its result does not establish the effect of AI Mode ads in every market.
Are AI search ads available in Europe?
As of October 29, the supplied source says Google’s help page listed 12 countries for ads in AI answers, in English, but did not list Germany or the rest of the European Union. Google’s announcement named the U.K. for a planned fourth-quarter rollout.
Source: ThorstenMeyerAI.com
