🔍 Read the full analysis: Google Brings AI Search Advertising To A Global Audience on ThorstenMeyerAI.com
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TL;DR
Google said on October 28 that ads in its AI Mode search experience will expand to 10 more countries, with Brazil, Mexico and the UK planned for later in 2026. In the US, ads are also appearing in AI Mode follow-up answers. The move comes as Google Search advertising growth slowed to 12% in the third quarter, and raises questions about ad control, user labeling and website traffic.
Google said on October 28 it will bring ads in its chat-style AI Mode search experience to 10 more countries and begin showing ads in US follow-up answers. The expansion widens the places where commercial messages can appear within AI-generated search responses, as Google Search advertising growth slowed to 12% in the third quarter.
The 10 new markets are Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Google plans to add Brazil, Mexico and the United Kingdom in the fourth quarter of 2026. Its October 28 announcement also covers US users: ads can now appear as people ask follow-up questions in AI Mode, rather than only alongside an initial query.
Google’s advertising help materials say existing Search, Shopping and Performance Max campaigns can participate automatically. Advertisers do not have a separate setting to target these placements or opt out, according to the source material. Reporting is provided in aggregate, and Google’s AI may create short explanatory text beside an ad that advertisers cannot edit.
Google says ads in AI answers will carry a “Sponsored” label and says advertising does not affect the AI-generated answer itself. Those are company statements; the source material reports no independent audit of whether ads influence the answer. Google also says click-through rates for sponsored and unpaid product listings in AI Mode were similar in internal US data from August 20 to September 3, 2026. That comparison is about product 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 Follow the Search Conversation
The change extends advertising into more of the search journey. In AI Mode, a person may ask a detailed question and then refine it through several follow-ups. Ads appearing during those exchanges give Google additional opportunities to place commercial results within a conversation, rather than relying only on a traditional results page.
For advertisers, automatic participation may mean their existing campaigns can appear in a new format without a separate setup, but it also limits control over where an ad appears and how accompanying text is written. For users, the practical distinction is whether an item is labeled “Sponsored” and whether that label is clear alongside the AI’s response.
The expansion also matters to publishers and other sites that depend on search referrals. A working paper by Agarwal and Sen, cited in the source material, reports that in a randomized experiment with 1,065 US users, AI Overviews reduced clicks to websites by 39.8% when they appeared, while clicks on ads showed no measurable change. The finding is limited to that experiment; it does not establish what will happen to traffic across all searches or countries. It does point to a potential divide: users may click fewer external sites even if advertising within search remains active.
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Search Ads Move Into AI
Google’s AI search products include AI Overviews, summaries displayed within many standard search results, and AI Mode, a separate conversational experience that supports longer questions and follow-ups. The October announcement concerns ads in AI Mode, including the newly expanded follow-up placements; it is part of a broader rollout of advertising in AI-generated search experiences.
According to the timeline in the source material, Google began showing ads in AI Overviews on mobile in the US in October 2024 and brought them to desktop in May 2025, when it also began testing ads in AI Mode. At Google Marketing Live in May 2026, it started testing formats including conversational ads whose text is tailored to a question and ads highlighted within AI recommendations.
The expansion arrives as Search & other revenue reached $63.4 billion in July through September, up 12% year over year, according to Alphabet. The growth rate was 17% in the preceding quarter, 19% in the first quarter of 2026 and 17% in the fourth quarter of 2025. Alphabet Chief Business Officer Philipp Schindler cited currency movements as the largest factor behind the latest growth rate and also pointed to lower monetization of AI Mode searches.
“Ads will be clearly labeled as ‘Sponsored’.”
— Google, in its October 28 announcement
Reach, Controls and Trust Questions
Google has not provided, in the material cited here, a public estimate of how many users or searches will encounter the new placements in each country, or what share of AI Mode searches will carry an ad. The launch does not by itself establish how much additional revenue the placements will generate.
Advertisers’ ability to review or influence individual placements also appears limited under the described campaign setup: participation is automatic for eligible existing campaigns, there is no separate opt-out, and reports are aggregated. The source material does not specify whether Google will add more detailed reporting or controls later.
The effect on publishers remains uncertain. The cited experiment concerns AI Overviews and a defined group of US participants, not this international AI Mode rollout. Google’s assurance that ads do not shape AI answers is also a company claim; the source material identifies no independent review of that separation. The listed country rollout is English-only, and Germany and other EU countries were not included on Google’s help page as of October 29.
Upcoming Country Rollouts
Google has said it plans to extend AI Mode ads to Brazil, Mexico and the UK in the fourth quarter of 2026. The announcement does not give exact launch dates for those markets. Advertisers and users can watch for changes to campaign reporting, ad labels and placement controls as the rollout proceeds.
Further evidence will be needed to judge how these placements affect clicks to publishers, ad performance and user understanding of the boundary between an AI answer and a paid result. Alphabet’s next financial updates may also clarify whether AI Mode’s monetization changes as use grows. Until then, the announced rollout and Google’s own descriptions are confirmed, while its longer-term effects remain open.
Key Questions
Which countries are getting AI Mode ads?
Google named Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore in the October 28 expansion. Brazil, Mexico and the UK are planned for the fourth quarter of 2026.
What are US multiturn ads?
They are ads that can appear in answers to follow-up questions in AI Mode. Google’s announcement extends ad placements beyond the initial query in a conversation.
Can advertisers opt out of these placements?
According to the source material’s account of Google Ads Help, eligible Search, Shopping and Performance Max campaigns participate automatically, with no separate targeting or opt-out for these placements. Reporting is described as aggregate.
How does Google say users can identify an ad?
Google says ads in AI answers will be marked “Sponsored.” Its further claim that ads do not influence the AI’s answer has not been independently audited in the source material.
Are AI search ads coming to Germany or the wider EU?
They were not listed for Germany or other EU countries on the Google help page described in the source material as of October 29, 2026. Google’s announcement did not provide an EU launch date.
Source: ThorstenMeyerAI.com
