Google Expands AI Search as Advertising Revenue Faces Pressure

Google is accelerating its transition toward artificial intelligence-powered search as growing adoption of AI Mode reshapes its advertising business and the way users access information online. During its third-quarter 2026 earnings discussions, Alphabet executives reported the strongest annual search query growth in five years while acknowledging that AI interactions currently generate less advertising revenue than conventional searches.

The financial implications emerged as investors reassessed Google's transformation strategy. Alphabet shares fell 12% on Thursday, October 29, wiping out nearly $500 billion in market value, according to Yahoo Finance.

Google reported that Search revenue increased 12% year over year to $63 billion in the third quarter. However, Philipp Schindler, Google's senior vice president and chief business officer, identified several factors behind the slowdown in advertising growth between the second and third quarters. Foreign exchange movements represented the largest contributor, while increased AI Mode activity also affected monetization.

Schindler acknowledged that the newer search experience currently generates less advertising revenue per interaction, although Google is expanding commercial advertising opportunities across its AI products.

"In Q3, Search grew 12% year-over-year to $63 billion, and when you look at the change in growth rate from Q2 to Q3, there were a few drivers here. First, there was FX. It was the single largest driver of Search deceleration relative to Q2.

To be clear, we feel very good about our trajectory here. Our ad experiments have shown promising results and we're now scaling ads within both AI Overviews and AI Mode to more users and more queries; including, as I mentioned, international markets and multiturn ads in the U.S." Schindler said.

Google's expansion strategy also includes introducing advertisements in AI Mode across additional international markets. According to the company's October 28 announcement, the rollout covers Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines, and Singapore. Brazil, Mexico, and the United Kingdom are scheduled for expansion in the fourth quarter of 2026.

The company also introduced multiturn advertisements in the United States, allowing sponsored placements to appear during follow-up conversations. Google said AI Mode searches are approximately three times longer than traditional search queries on average, creating additional opportunities to connect users with businesses.

Google's research indicates that users are comfortable with advertisements in AI Mode and consider them relevant. The company also reported that click-through rates for sponsored and organic product listings are already similar within the experience.

Chief Business Officer Philipp Schindler described the commercial potential of these interactions while addressing concerns about lower initial monetization.

"The majority of AI mode queries are incremental, creating more monetization opportunities over time. Our user research shows that people are comfortable with ads on these surfaces and find them highly relevant," Schindler said.

Chief Executive Officer Sundar Pichai emphasized that the company's AI investments are increasing search activity rather than simply replacing conventional queries. He described the latest usage figures as evidence that Google's transformation is expanding the overall search market.

"Search has strong momentum. Our AI investments are driving increased usage and overall query growth, including commercial queries. In fact, our year-over-year query growth rate is the highest it's been in the last five years. Just like our shift to mobile over a decade ago, we are focused on building the best Search user experience, followed by monetization," Pichai said.

Alphabet Chief Financial Officer Anat Ashkenazi also highlighted the company's ability to generate revenue from artificial intelligence investments across its products and enterprise services.

"We're in a unique position to be able to monetize our AI investments across many products that reach billions of users and enterprises. Our AI investments in Search are driving our highest query growth in half a decade," Ashkenazi said.

Beyond advertising, Google is preparing to transform Search into a platform capable of completing tasks rather than simply providing links and information. Pichai identified activities such as booking reservations, completing forms, scheduling appointments, and making purchases as important areas for development.

"I would view it as an expansion opportunity. Just like a few years ago, being able to incorporate AI chat use cases in search allowed people to ask more and do more in search, which is what is playing out in our usage," Pichai said.

The company plans to connect these agent-based capabilities across Search, the Gemini app, Chrome, Android, and Workspace. Pichai said the approach would allow Google to handle more complicated requests involving multiple steps and services.

"Agents will operate as a unifying layer across our products, so you'll see us extend these agentic experiences beyond Search and the Gemini app to Chrome, Android and our Workspace products as well. I think agents would, again, be an opportunity to expand the types of problems we solve for our users. I think people always underestimate all the components you need to deliver these complex experiences for users.

And Search on the surface looks simple, but there's extraordinary deep levels of investment and things we have built over time, like Knowledge Graph being an example. And so our understanding of the world, et cetera. So, I think I'm excited about agents, and I would view it as a new frontier, which brings in a new set of use cases to Search, and so we are excited to work through that," Pichai said.

Google's strategy places AI-powered task completion at the center of its next search evolution, with the company extending these capabilities across its existing product ecosystem while continuing to scale advertising formats within AI Mode.