Alphabet Inc. (GOOG), the parent company of Google, climbed during the regular session, closing at $336.43 at 4:00 p.m. EST, before extending gains in overnight trading to $338.59 as of 11:42 p.m. EST. Alphabet Inc.’s market capitalization briefly reached $4.06 trillion on an intraday basis. The shares rose sharply as investors welcomed the news that Apple Inc. is deepening its partnership with Google by integrating Gemini (AI) into Siri as part of its expanding Apple Intelligence platform, announced on Monday. Reacting to the announcement, Elon Musk said, “This seems like an unreasonable concentration of power for Google, given that they also have Android and Chrome,” in a post on X (formerly Twitter) on Tuesday, January 13.
Apple’s Gemini–Siri Integration Reshapes AI Strategy
At the center of the rally is Apple Inc.’s reported decision to rely on Gemini 3 and Gemini Pro models to power major upgrades to Siri across iOS 26 and iPadOS 26. The move positions Gemini (AI) as a core engine within Apple Intelligence, enabling more natural language understanding, contextual reasoning, and multimodal capabilities. For Siri, which has long lagged behind rivals, the Gemini integration represents its most significant overhaul in years.
Apple Inc. CEO Tim Cook had earlier emphasized that the company is taking a cautious, quality-first approach to generative AI partnerships. In that context, Gemini’s hybrid on-device and cloud-based architecture appears well aligned with Apple Intelligence’s privacy-focused design. While OpenAI remains part of Apple Inc.’s broader AI ecosystem, its role is increasingly seen as secondary, with Gemini emerging as the primary large language model supporting Siri’s evolution.
Alphabet Inc. CEO Sundar Pichai had earlier credited the company’s “AI pivot” for recent momentum, highlighting Gemini’s rapid deployment across Search, Android, Workspace, and Google Cloud. As comparisons with Nvidia intensify, particularly around valuation leadership and AI revenue growth, investors are increasingly viewing Gemini as Alphabet Inc.’s best chance to narrow the gap with the world’s most valuable company.
Earnings in Focus as Gemini Faces OpenAI Rivalry
With Alphabet Inc.’s earnings imminent, attention is shifting to how Gemini adoption will translate into financial performance. Alphabet Inc. Class A Common Stock is expected to report earnings on February 3, 2026. Based on forecasts from 15 analysts, Zacks estimates a consensus earnings per share of $2.59 for the quarter, compared with a reported EPS of $2.15 in the same period last year. Management guidance on 2026 will be critical in determining whether the current rally in GOOG / GOOGL is sustainable.
The competitive backdrop remains intense. OpenAI continues to set benchmarks in conversational AI, raising the question many investors are asking: Is Gemini better than ChatGPT for Siri? While definitive answers may take time, the market’s reaction suggests confidence that Alphabet Inc.’s technology is now robust enough to anchor Apple Intelligence at scale.
As Alphabet Inc. approaches earnings with momentum on its side, the Apple–Gemini–Siri alliance has emerged as a defining catalyst, one that could shape both Google’s stock trajectory and the future of consumer AI in 2026.
