🔍 Read the full analysis: What A Global Rollout Of Google AI Search Ads Could Mean on ThorstenMeyerAI.com
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TL;DR
Google announced on October 28 that ads in its AI Mode search experience are expanding to 10 countries, with ads also appearing in US follow-up questions. The move comes as Google Search advertising growth slowed to 12% in the latest quarter; the effects on website traffic, advertisers and users remain uncertain.
Google said on October 28 it is expanding ads in its conversational AI Mode search experience to 10 more countries and introducing ads in US follow-up questions. The rollout extends advertising into more parts of AI-generated search answers as Alphabet reported 12% growth in Search & other revenue for July through September, down from 17% in the previous quarter.
The 10 markets newly listed for 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 US, ads can now appear in answers to later questions in an AI Mode conversation, not only in response to the opening query.
Google’s advertising help information says existing Search, Shopping and Performance Max campaigns can participate automatically. Advertisers do not have a separate AI Mode targeting control or an opt-out, according to the source material. Performance reporting is aggregated, and Google can generate short explanatory text alongside ads that advertisers cannot edit.
Google says ads in AI answers carry a “Sponsored” label and do not affect the AI’s answer. The company also says AI Mode queries average three times the length of traditional searches. Its comparison of ad and unpaid product-list click-through rates uses Google’s internal US data from August 20 to September 3, 2026; it compares items within AI Mode and does not establish how often users click through 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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Ads Reach More AI Search Moments
The expansion gives Google more opportunities to show commercial results in searches where people ask detailed questions and continue with follow-ups. For advertisers, the change means existing campaigns may appear in AI Mode without a separate campaign setup or a dedicated opt-out, while Google controls the surrounding AI-generated explanation. That may make placement and messaging harder for advertisers to manage than in a conventional search ad.
For publishers, a key concern is whether an AI answer satisfies a query before a user visits an outside website. A 2026 working paper by Agarwal and Sen reports results from a randomized experiment with 1,065 US users: when AI Overviews appeared, clicks to websites fell by 39.8%, while clicks on ads showed no measurable change. Those findings concern AI Overviews in the study, not the newly expanded AI Mode ads, and do not prove that the international rollout will produce the same results.
For users, ads inside an answer can make it more important to distinguish paid placement from information generated by the search system. Google’s label is a stated safeguard, but its claim that ads do not influence the answer has not, in the source material, been independently audited.
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From AI Overviews to Follow-Ups
The rollout builds on earlier steps. Google began showing ads in mobile AI Overviews in the US in October 2024, extended them to desktop in May 2025 and began testing ads in AI Mode that month. At Google Marketing Live in May 2026, it also introduced tests of conversational discovery ads, which tailor ad text to a query, and highlighted answers, where an ad may appear within AI recommendations.
The commercial backdrop is a slowdown in Search & other revenue growth. Alphabet reported $63.4 billion for the third quarter of 2026, about half of the company’s revenue. The growth rate was 12%, compared with 17% in the second quarter, 19% in the first quarter and 17% in the fourth quarter of 2025. The source calculates that revenue rose about 0.1% from the second quarter; that calculation is based on Alphabet’s reported figures.
On the earnings call, Alphabet chief business officer Philipp Schindler cited currency exchange rates as the largest factor in the slower growth, alongside changes in some retail and media spending. He also said that strong growth in AI Mode queries affected results because those searches had lower monetization. Google has said query growth is at its highest level in five years, but has not disclosed a detailed revenue figure for AI Mode ads.
“Ads will be clearly labeled as ‘Sponsored.'”
— Shashi Thakur, who leads Google’s search ads business, in Google’s October 28 announcement
Traffic and Ad Effects Remain Unknown
The announcement does not establish how much revenue the new placements will generate, whether they will change click rates in the newly added markets, or how many users will follow ads rather than organic results. Google’s internal comparison of sponsored and unpaid product listings does not answer whether ads reduce visits to publishers’ websites.
The reported experiment on AI Overviews is a separate study and cannot by itself predict the effect of ads in AI Mode or follow-up questions. It is also not yet clear how Google’s ad labels will appear across each format and country, or whether independent testing will verify the company’s claim that advertising does not influence AI-generated answers. As of October 29, Google’s help page lists 12 countries for ads in AI answers, in English; Germany and other EU countries are not listed.
Watch the Country Rollout
Google has said Brazil, Mexico and the UK are planned for the fourth quarter of 2026. The rollout’s next measurable indicators will include which markets receive the formats and when, how Google reports advertiser performance, and whether it provides more detail on revenue from AI Mode searches. Advertisers and publishers will also be watching for data on user clicks and traffic as ads reach more AI answers.
For now, Google’s announcement confirms a broader deployment, not its eventual effect on publisher visits, ad returns or user trust. Those outcomes will depend on usage and performance data that have not yet been disclosed.
Key Questions
Where is Google expanding AI Mode ads?
Google announced expansion to Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Brazil, Mexico and the UK are planned for the fourth quarter of 2026.
Will ads appear in follow-up questions?
Yes. Google said ads are being introduced in US follow-up questions in AI Mode, allowing placements in later turns of a conversation as well as the initial query.
Can advertisers opt out of AI Mode placements?
According to Google Ads help information cited in the source material, existing Search, Shopping and Performance Max campaigns can participate automatically, with no separate opt-out or AI Mode targeting control.
Does the rollout prove that publishers will lose traffic?
No. A 2026 working paper found fewer website clicks when AI Overviews appeared in an experiment, but that result does not establish the effect of the new AI Mode ad rollout or predict its impact in each market.
How can users identify ads in AI answers?
Google says ads will be marked “Sponsored.” The company also says ads do not influence the AI’s answer, but the source material reports no independent audit of that claim.
Source: ThorstenMeyerAI.com
