🔍 Read the full analysis: When The Answer Carries The Ad: Google Takes AI Search Ads Global As Search Growth Slows on ThorstenMeyerAI.com
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TL;DR
Google said on October 28 that ads in its conversational AI Mode are expanding to 10 additional countries, with ads also appearing in US follow-up questions. Alphabet reported Google Search and other revenue grew 12% in the third quarter, and said lower monetization of AI Mode searches contributed to the slowdown. Google says ads will be labeled “Sponsored”; independent evidence about their effect on the AI answer is not provided.
Google said on October 28 that it is expanding ads in its conversational AI Mode search to 10 more countries and adding ads to follow-up questions in the United States. The move broadens advertising inside AI-generated search experiences as Alphabet reported that Google Search and other revenue grew 12% in the third quarter, down from 17% in the previous quarter.
The newly added markets are Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Google said it plans to bring the format to Brazil, Mexico and the United Kingdom in 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, extending advertising across a multi-question search session.
Google describes two AI search products involved. AI Overviews are generated summaries that can appear above results on standard Google Search pages; AI Mode is a separate, chat-style search experience. Google has previously introduced ads in AI Overviews and tested ads in AI Mode. Its October announcement extends the latter to new countries and to further turns in US conversations.
Google’s advertising help information says existing Search, Shopping and Performance Max campaigns can participate automatically, without a separate campaign setting for these placements or an opt-out for advertisers. The company says it reports results in aggregate and uses AI-generated explanatory text alongside some ads, which advertisers cannot edit. Google says ads in AI answers will be labeled “Sponsored”.
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 the Search Conversation
The expansion puts paid placements closer to the point where a user receives a direct answer. A person asking how to solve a problem may see an ad for a related product within or alongside the AI experience, rather than only in a conventional list of search results. For advertisers, this creates access to a format Google says can respond to longer, more specific queries. For users, it makes the boundary between an answer and a commercial placement more consequential.
The business backdrop is a slowing growth rate in Search revenue. Alphabet reported $63.4 billion in Google Search and other revenue for July through September, up 12% from a year earlier. That compares with 17% growth in the previous quarter and 19% in the first quarter of 2026. Google chief business officer Philipp Schindler said exchange rates were the largest driver of the slowdown, and also cited lower monetization of AI Mode searches. The figures do not establish that the new ads will reverse the trend, but they show why monetizing AI search is a business issue for Google.
Publishers have a separate concern: AI-generated summaries can answer questions without sending users to websites. A 2026 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. The researchers found no measurable change in ad clicks in that experiment. The result is limited to the study’s design and does not establish what the new AI Mode placements will do to publisher traffic or advertising outcomes.
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How Google Reached AI Ads
Google’s rollout has developed in stages. According to the company’s prior announcements, ads in AI Overviews began appearing for mobile users in the US in October 2024 and reached desktop in May 2025, when Google also began testing ads in AI Mode. At Google Marketing Live in May 2026, the company introduced tests of additional formats, including Conversational Discovery ads and Highlighted Answers.
Google says AI Mode queries are, on average, three times longer than traditional searches. It also reported that click-through rates were similar for sponsored and unpaid product-list items within AI Mode. The company’s cited comparison used its internal US data from August 20 to September 3, 2026; it compares product-list items inside AI Mode and does not measure clicks to websites generally.
Alphabet’s third-quarter results put the expansion in financial context. Search and other revenue was $63.4 billion, about half of Alphabet’s revenue, and grew more slowly year over year than in the preceding quarter. Schindler cited currency movements, changes in some retail and media spending, and the lower monetization of AI Mode searches. Google has also said overall query growth is at its highest level in five years; that is a company statement, not an independent measure of the new advertising formats.
““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 third-quarter earnings call
What Ad Effects Remain Unknown
Google has not provided independent evidence that ads do not influence the answers generated by AI Mode. Its labeling assurance is a company statement, and the cited performance figures are based on Google’s internal data. The rollout announcement does not specify how often users will encounter ads, how placement will vary by query, or how the new formats will affect advertiser costs and sales.
It is also unclear what the expansion will mean for publishers’ referral traffic. The cited Agarwal and Sen working paper examined AI Overviews in a US experiment, not the newly expanded AI Mode ads. Its reported 39.8% reduction applies to clicks to websites when AI Overviews appeared in that study; it should not be treated as a measured effect of this announcement or as a forecast for all searches.
Google’s advertising help page listed 12 countries for ads in AI answers as of October 29, 2026, and said the format was English-only. Germany and other EU countries were not listed. The announcement gives no confirmed schedule for those markets, and its plans for Brazil, Mexico and the UK are stated for the fourth quarter rather than tied to specific launch dates.
Markets and Formats to Watch
Google’s next stated market expansion is planned for Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. The company has not announced exact dates in the source material. Advertisers and publishers will be able to observe how the placements appear as more users gain access, but the company’s announcement does not set out a public, country-by-country schedule for reporting results.
The practical questions will include how frequently sponsored placements appear in AI Mode, whether users recognize the labels, and how the format affects clicks to advertiser sites and publisher pages. Google’s aggregate reporting approach may limit advertisers’ ability to isolate performance for these specific placements. Further results or reporting from Google, and independent studies of user behavior, would help clarify those effects.
For now, users can look for Google’s “Sponsored” label, while treating claims about how ads relate to AI-generated answers as Google’s position rather than independently verified findings. The rollout is continuing, and its commercial and traffic effects remain to be established.
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 said Brazil, Mexico and the UK are planned for the fourth quarter of 2026.
What changes for US users?
Ads can now appear in follow-up questions in AI Mode, not only in the first response. Google says ads in AI answers will carry a “Sponsored” label.
Can advertisers opt out of these placements?
Google’s advertising help information says existing Search, Shopping and Performance Max campaigns can participate automatically and describes no separate opt-out for these placements. It also says performance is reported in aggregate.
Does the research show that these new ads reduce publisher clicks?
No. The cited 2026 working paper reported a 39.8% reduction in website clicks when AI Overviews appeared in its randomized experiment. It did not measure the impact of the newly expanded AI Mode ads, so that result cannot establish their effect on publisher traffic.
Are AI search ads available in the European Union?
As of October 29, 2026, Google’s help page listed 12 countries for ads in AI answers and said the format was English-only. Germany and other EU countries were not listed; Google had not provided a schedule for them in the source material.
Source: ThorstenMeyerAI.com
