🔍 Read the full analysis: Google’s Global AI Search Ad Rollout: A Shift In Search on ThorstenMeyerAI.com
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TL;DR
Google said on October 28 that ads in its chat-style AI Mode are expanding to 10 more countries and will appear in US follow-up answers. The move comes as Google Search & other revenue growth slowed to 12% in the third quarter; advertisers participate through existing campaigns, while the effect on publishers and users remains uncertain.
Google is expanding ads in AI Mode to 10 additional countries and introducing ads in US follow-up answers, extending commercial placements further into its chat-style search experience. The October 28 announcement came as Alphabet reported that Search & other revenue grew 12% in the third quarter, down from 17% in the previous quarter. The timing draws attention to how Google plans to earn from AI-powered searches, though the company has not quantified how much the new formats will contribute.
The expansion covers Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Google also plans to bring the feature to Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. In the United States, the company is rolling out ads in responses to follow-up questions, so advertising can appear after the first question in an AI Mode conversation as well.
Google’s advertising help information says existing Search, Shopping and Performance Max campaigns can serve in these placements automatically. Advertisers do not have a separate targeting control or an opt-out for AI Mode ads, according to the supplied material. Reporting is provided in aggregate, and Google may generate short explanatory text alongside ads that advertisers cannot edit.
Google says ads in AI answers will be marked “Sponsored” and that advertising does not affect the AI-generated answer. The company also said AI Mode queries are, on average, three times longer than conventional searches. Its claim that sponsored and organic product-listing click-through rates are similar is based on Google’s internal US data from August 20 to September 3, 2026; it compares listings within AI Mode, not clicks to external 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 Answers
The change brings ads into more of the conversation users have with Google, rather than limiting them to a search-results page or the initial query. For advertisers, this creates another place for existing campaigns to appear, but the lack of a separate opt-out or detailed placement reporting may make it harder to control and assess exposure specifically within AI answers.
For publishers, a key concern is whether users who receive a useful summary will still visit the websites behind it. A 2026 working paper by Agarwal and Sen reports a randomized experiment involving 1,065 US users: when AI Overviews appeared, clicks to websites fell 39.8%, while clicks on ads showed no measurable change. That finding concerns AI Overviews, not the newly expanded AI Mode ads, and it is a working paper rather than a settled measure of the rollout’s effects.
Users will see advertising within answers they may read as assistance or recommendations. The Sponsored label gives a visible signal, but the available material does not include an independent audit of Google’s claim that ads do not influence the answer itself. Alphabet’s results add a business dimension: Google Search remains a major revenue source, while the company says AI Mode searches currently monetize at a lower level.
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From AI Overviews to AI Mode
Google has introduced ads in AI search in stages. Ads in AI Overviews—summaries shown within ordinary search results—went live for US mobile users in October 2024 and expanded to desktop in May 2025. Around the same time, Google began testing ads in AI Mode, a separate, conversational search experience that supports longer questions and follow-ups.
At Google Marketing Live in May 2026, the company began testing other formats, including Conversational Discovery ads, which use Gemini to tailor ad text to a question, and Highlighted Answers, which can place an ad within AI recommendations. The October announcement adds more countries and US follow-up-question placements. Google’s help page listed 12 countries for ads in AI answers as of October 29; Germany and other EU countries were not listed. The source material says the listed availability is in English.
Alphabet reported $63.4 billion in Search & other revenue for July through September 2026. Growth was 12%, compared with 17% in the second quarter and 19% in the first. On the earnings call, chief business officer Philipp Schindler cited currency effects and other factors, and said fast-growing AI Mode queries had an impact because they were generating lower monetization.
““Ads will be clearly labeled as ‘Sponsored.’””
— Shashi Thakur, who leads Google’s search advertising business, in the October 28 announcement
What the Rollout Cannot Yet Show
Google has not disclosed how much revenue the new AI Mode placements are expected to generate, how many users or advertisers they will reach, or whether the formats will change ad prices or campaign performance. The company’s reported similarity in click-through rates is limited to internal data about sponsored and organic product listings during a specific period; it does not establish how ads affect clicks to publishers’ sites.
It is also not yet clear how users will distinguish an advertisement from an AI-generated recommendation beyond the Sponsored label, or whether independent testing will verify Google’s claim that advertising does not influence the answer. The working-paper experiment on AI Overviews offers evidence about website clicks in that setting, but it does not measure the impact of this AI Mode expansion.
Google attributed the slowdown in Search revenue growth partly to currency movements, and Schindler also cited retail, media and entertainment factors. The available information does not isolate the contribution of AI Mode monetization from those other causes. The extent of future availability outside the named markets is also unconfirmed.
More Markets in Fourth Quarter
Google plans to add Brazil, Mexico and the UK in the fourth quarter of 2026, according to its announcement. The company has not provided a more specific launch date in the supplied material. The US rollout of ads in follow-up questions is described as beginning now.
Advertisers will be able to monitor results through aggregate reporting tied to existing campaigns, while publishers and users will have to watch for changes in referral traffic and the placement of ads within AI answers. Further details on measurement, market availability and the performance of these formats may clarify whether the rollout changes how Google monetizes conversational search.
Key Questions
Where is Google expanding ads in AI Mode?
Google named 10 additional countries: 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.
What is changing for US users?
Google is introducing ads in AI Mode follow-up answers. Ads may therefore appear in later turns of a conversation, not only in response to the first question.
Can advertisers opt out of these placements?
According to Google’s advertising help information, eligible existing Search, Shopping and Performance Max campaigns participate automatically. The supplied material says advertisers do not have a separate AI Mode opt-out or targeting control, and results are reported in aggregate.
How does Google say users can identify ads?
Google says ads in AI answers carry a “Sponsored” label. The company also says ads do not affect the AI’s answer, but the supplied material reports no independent audit of that claim.
Does the rollout prove AI search is reducing publisher traffic?
No. A 2026 working paper found fewer website clicks when AI Overviews appeared in an experiment, but that result does not directly measure the effect of the new AI Mode placements. Their impact on publisher traffic remains unclear.
Source: ThorstenMeyerAI.com
