Alphabet generated $74 billion in digital advertising revenue in Q3 2025, leveraging data from its billions of users across Search, YouTube and other apps. With Gemini now at 650 million monthly active users—almost all on the free tier—Alphabet could tap an incremental ad revenue stream by inserting targeted ads into the app. Early reports in December suggested the company would begin doing so, though DeepMind CEO Demis Hassabis recently indicated no immediate plans. Even a conservative small-dollar ad load could translate into hundreds of millions more in quarterly ad sales, playing to Alphabet’s core strength of monetizing free users.

In late 2025, Apple struck a multiyear deal to integrate Gemini into Siri and its new Apple Intelligence features, a partnership expected to cost Apple several billions over its term. This tie-up—leveraging Gemini 3, which ranks highest across multiple categories on crowdsourced AI review platform LMArena—gives Alphabet access to Apple’s 2.4 billion active devices worldwide. The pact not only extends Gemini’s distribution but also serves as a vote of confidence in Alphabet’s AI technology. For investors, the alliance underscores Gemini’s market leadership and the potential for combined hardware-software deployment to drive further usage and data collection.

Beyond its advertising business, Alphabet’s Google Cloud segment posted 34 percent year-over-year revenue growth in Q3 2025 to $15.2 billion, up from $11.3 billion a year earlier. Operating income in the cloud unit rose to $3.6 billion, nearly double the $1.9 billion reported in Q3 2024. Backlog ended the quarter at $155 billion—an 82 percent jump year-over-year and 46 percent sequentially—reflecting strong enterprise demand for AI infrastructure. Alphabet has earmarked roughly 60 percent of its Q3 capital expenditures—$24 billion in total—for servers, data centers and networking gear to support this AI build-out.