🔍 Read the full analysis: Could Ads In AI Answers Shape Google’s Next Search Chapter? on ThorstenMeyerAI.com
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TL;DR
Google announced October 28 that ads in its AI Mode search experience are expanding to 10 more countries, with ads also entering US follow-up questions. The rollout comes as Google Search advertising growth slowed to 12% in the third quarter; the effect on website traffic, ad revenue and users’ ability to distinguish advertising from answers remains under scrutiny.
Google said on October 28 it will bring ads in its chat-style AI Mode search experience to 10 more countries and begin showing them in US follow-up questions, extending advertising further into conversations that also provide AI-generated answers. The announcement came as Alphabet reported that Google Search and other advertising revenue grew 12% in the third quarter, down from 17% in the previous quarter.
The 10 markets receiving AI Mode ads 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 in answers to follow-up questions, not just at the start of an AI Mode conversation. Google Search ads leader Shashi Thakur announced the changes.
Google describes two relevant products: AI Overviews, summaries that appear within ordinary search results, and AI Mode, a separate conversational search experience. Google says ads in these AI answers will be labeled “Sponsored”. It also says ads do not affect the AI-generated answer. That is Google’s representation; the source material reports no independent audit of that claim.
For advertisers, the source says existing Search, Shopping and Performance Max campaigns are included automatically, with no separate targeting or opt-out for these placements. Reporting is aggregated, and Google-generated short explainers alongside ads cannot be edited by advertisers, according to Google Ads Help. Google also says AI Mode queries average three times the length of classic searches and that sponsored and unpaid product-listing click-through rates were similar in internal US data from August 20 to September 3, 2026. That comparison concerns product listings within AI Mode, not 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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The Search Ad Model Moves Into Answers
The change puts commercial placements closer to the point where users receive an answer, rather than limiting ads to conventional result pages. That could matter to advertisers, who gain access to longer, conversational queries, and to users, who must distinguish sponsored material from the response itself. Google says the label will identify ads, but the company’s assurance that ads do not shape the generated answer has not been independently verified in the supplied reporting.
It also matters to publishers whose business depends on search referrals. A working paper by Agarwal and Sen reports a randomized experiment involving 1,065 US users: when AI Overviews appeared, clicks to websites fell by 39.8%, while clicks on ads showed no measurable change. The result is from a working paper, not a settled estimate of the effect across all searches. Still, it highlights a potential imbalance: AI answers may reduce traffic to sites while advertising continues to receive clicks.
For Google, the expansion comes amid slower reported growth in Search revenue. The company’s third-quarter figures show $63.4 billion in “Search & other” revenue, up 12% year over year, compared with 17% growth in the prior quarter. Google cited foreign exchange as the biggest factor in the slowdown and also pointed to lower monetization of AI Mode searches. The rollout is one part of how the company is developing advertising in those experiences; the available information does not establish how much revenue the new placements will generate.
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How Google’s AI Ads Expanded
Google has introduced advertising in AI search in stages. Ads in AI Overviews began appearing for US mobile users in October 2024, according to the company’s earlier announcements. In May 2025, Google extended them to desktop and began testing ads in AI Mode. At Google Marketing Live in May 2026, it introduced tests of formats called Conversational Discovery ads and “Highlighted Answers,” including ads adapted to a question or placed within AI recommendations.
The October announcement extends that sequence to more markets and to additional turns in a US AI Mode conversation. The financial backdrop is a slowdown in year-over-year Search & other growth: Alphabet reported 17% in the fourth quarter of 2025, 19% in the first quarter of 2026, 17% in the second and 12% in the third. On the earnings call, chief business officer Philipp Schindler cited exchange rates, changes affecting some retail advertisers and normalized media and entertainment spending, as well as lower monetization of AI Mode queries.
Google has said query growth is strong, and Schindler described AI Mode query growth as affecting revenue because of its lower monetization. The supplied source is published by a search-dependent publisher that says it earns some revenue through search referrals and affiliate links. That financial interest is relevant when weighing its discussion of publisher traffic; its reported experiment and Google’s statements remain distinct types of evidence.
““Ads will be clearly labeled as ‘Sponsored.’””
— Shashi Thakur, Google’s search ads leader, in the October 28 announcement
Traffic Effects and Ad Separation
The announcement does not quantify how much revenue the new placements are expected to produce or how often users will encounter them. It is also unclear how the placements will affect publisher referrals across different searches and markets. The cited 39.8% decline in website clicks comes from a specific randomized experiment with US users and should not be treated as a universal outcome.
The source says Google’s help page lists 12 countries for ads in AI answers, in English, as of October 29, and does not list Germany or other EU countries. That status may change as the rollout develops. Google says ads do not influence AI answers, but the supplied material identifies no independent audit of that claim. Its click-through-rate comparison also does not answer whether ads divert clicks from websites.
More Markets and Follow-Up Ads
Google has said it plans to bring AI Mode ads to Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. The US rollout of ads in follow-up questions is now under way. Advertisers, publishers and users will have to watch how the placements appear in practice, what reporting Google provides, and whether the company releases evidence about ad labeling and the relationship between ads and generated answers.
Alphabet’s next results and any further Google product announcements may clarify how AI Mode’s growing use affects Search advertising revenue. For now, Google has confirmed the expansion and its planned markets, but the commercial results and wider effects on web traffic remain unreported.
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 United Kingdom are planned for the fourth quarter of 2026.
Will ads appear in AI Mode follow-up questions?
Yes. Google said ads are being introduced in US follow-up queries in AI Mode, so ads may appear later in a conversation as well as in response to an initial question.
How will users identify ads in AI answers?
Google says ads will be labeled “Sponsored.” The company also says ads do not influence AI-generated answers, but the supplied reporting does not cite an independent audit of that claim.
Can advertisers opt out of these placements?
According to the source’s account of Google Ads Help, existing Search, Shopping and Performance Max campaigns participate automatically, with no separate targeting or opt-out for these AI answer placements. Reporting is provided in aggregate.
Does the rollout show that AI search reduces publisher traffic?
Not by itself. A working paper reports that AI Overviews reduced website clicks by 39.8% in a randomized experiment with 1,065 US users, while ad clicks showed no measurable change. That result applies to the experiment described; it does not establish the effect across all users or searches.
Source: ThorstenMeyerAI.com
