🔍 Read the full analysis: When AI Answers Carry Ads, Google Sees A Global Opportunity on ThorstenMeyerAI.com
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TL;DR
Google announced on October 28 that ads in its conversational AI Mode are expanding to 10 more countries, with ads also appearing in U.S. follow-up questions. Alphabet said Search & other revenue grew 12% in the third quarter, down from 17% in the prior quarter; it cited currency effects and lower monetization of AI Mode searches among the factors. The rollout raises questions about ad labeling, advertiser control and the effect on publisher traffic.
Google said October 28 it is expanding ads in its conversational AI Mode search experience to 10 more countries and adding ads to follow-up questions in the United States. The change brings advertising into more stages of AI-assisted searches as Alphabet’s Search & other revenue growth slowed to 12% in the third quarter, from 17% in the previous quarter.
The newly listed markets are Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Google also said it plans to bring AI Mode ads to Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. In the U.S., the rollout adds ads to follow-up questions, so an ad may appear not only after an initial search but later in the same conversation.
Google’s announcement, attributed to Shashi Thakur, who leads its search ads business, covers advertising in AI Mode. Google describes the format as ads placed alongside AI responses, including product ads that can appear with explanations generated by its systems. It says ads in AI answers carry a “Sponsored” label and that advertising does not affect the answer generated by AI. The latter is Google’s statement; the source material identifies no independent audit of that claim.
Advertisers do not get a separate opt-out for these placements, according to Google Ads Help as described in the source material. Existing Search, Shopping and Performance Max campaigns can participate automatically. The material also says advertisers cannot separately target AI Mode ads, reporting is aggregated, and Google-generated short explainers beside ads cannot be edited by advertisers. These conditions leave advertisers with less direct control over where and how an ad appears than a distinct, manually managed campaign might provide.
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 matters because AI search changes the shape of a search session: people can ask a longer initial question and continue with follow-ups without returning to a conventional results page. Placing ads throughout that interaction gives Google more opportunities to monetize questions, including ones that may previously have produced fewer or different ad placements. For users, the practical issue is whether the commercial result is easy to distinguish from the system’s answer. Google says the “Sponsored” label marks ads, but the source material reports no independent review of whether ads influence the answer itself.
For advertisers, automatic participation may offer access to searches that Google says are growing, but it also limits control over placement and ad wording. For publishers, the concern is that an AI answer may satisfy a user without a click through to a website. A working paper by Agarwal and Sen, based on a randomized experiment involving 1,065 U.S. users, reported that AI Overviews reduced website clicks by 39.8% when they appeared, while ad clicks showed no measurable change. That result is specific to the study’s experiment and is not proof that every publisher will see the same effect. It does, however, point to a potential imbalance: search ads may remain visible even as fewer users visit the sites that supply information.
The financial backdrop adds urgency. Alphabet reported $63.4 billion in Search & other revenue for July through September, about half of its revenue. Google’s business remains enormous, but the slower year-over-year growth coincides with its own acknowledgment that AI Mode searches were less monetized. Expanding ads is one way to address that gap, although Google has not said how much revenue the new placements are expected to generate.
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From AI Overviews to AI Mode
Google has been adding advertising to AI-generated search experiences in stages. Ads in AI Overviews—summaries appearing within standard search results—went live for U.S. mobile users in October 2024, according to the timeline in the source material. Google brought them to desktop and began testing ads in AI Mode in May 2025. At its May 2026 marketing event, the company also described tests of formats including Conversational Discovery ads and “Highlighted Answers.”
AI Overviews and AI Mode are related but distinct: the first is an AI summary within regular search results; the second is a separate, chat-style search that supports follow-up questions. Google says AI Mode queries are, on average, three times longer than traditional searches. It also reported that click-through rates for sponsored and unpaid product listings in AI Mode were already similar, based on its internal U.S. data from August 20 to September 3, 2026. That comparison concerns product-list clicks within AI Mode, not clicks to outside websites, and comes from Google’s own data.
Alphabet’s quarterly figures show Search & other revenue growth at 17% in the fourth quarter of 2025, 19% in the first quarter of 2026, 17% in the second and 12% in the third. Chief Business Officer Philipp Schindler cited exchange rates as the largest driver of the latest growth rate, while also mentioning retail and media spending factors. He separately said fast-growing AI Mode queries had an impact because of their lower monetization.
““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, as quoted on the company’s earnings call
Ad Influence and Traffic Effects
Google has said ads do not influence AI-generated answers, but the source material reports no independent audit of that claim. It also does not provide a revenue forecast for the expanded placements or a measurement of how often users will encounter ads in follow-up questions. Google’s cited similarity in click-through rates for paid and unpaid product listings does not establish how the format affects traffic to publishers.
The publisher-click finding comes from a working paper, not a peer-reviewed study, and reports results from a specific randomized experiment with 1,065 U.S. users. Its findings may not generalize to other users, markets or search formats. The exact timing of each country launch, the ad inventory available in each market and whether advertisers will gain additional controls are also not specified in the source material. As of October 29, Google’s listed country availability did not include Germany or other EU markets, and the source says the listed ads were English-only.
Markets and Measures to Watch
Google has said it plans to extend AI Mode ads to Brazil, Mexico and the UK in the fourth quarter of 2026. The company has not supplied a more precise schedule in the material provided. Advertisers and publishers will be watching for details on the rollout, reporting, placement controls and whether Google changes campaign participation rules.
Further evidence will be needed to assess how the ads affect both commercial performance and visits to outside websites. Relevant measures include ad clicks, publisher referrals and how clearly users recognize sponsored placements within an AI conversation. Alphabet’s next financial disclosures may also show whether AI Mode becomes more lucrative, but the October announcement does not quantify the expected contribution. For now, the confirmed development is a broader rollout; its effects on user trust, advertiser results and publisher traffic remain open.
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 is changing for U.S. users?
Ads are being added to follow-up questions in AI Mode, extending placements beyond the initial question in a conversational search.
Can advertisers opt out of these placements?
According to the Google Ads Help information described in the source material, existing Search, Shopping and Performance Max campaigns can participate automatically, with no separate opt-out or AI Mode targeting option.
How does Google say users can identify an ad?
Google says ads in AI answers will carry a “Sponsored” label. Its separate claim that ads do not influence the AI answer has not been independently audited in the source material.
Why is Google expanding ads now?
Alphabet reported that Search & other revenue grew 12% year over year in the third quarter, down from 17% in the previous quarter. Google cited exchange rates and lower monetization of AI Mode searches among the factors behind the result.
Source: ThorstenMeyerAI.com
