Apple Inc. and Alphabet Inc.’s Google announced a multi-year strategic partnership Monday under which Google’s Gemini artificial intelligence (AI) model will power the next generation of Siri, marking a significant stride in Apple’s halting AI strategy.

The collaboration represents Apple’s determination to ramp up development of its voice assistant after delays contributed to concerns the iPhone maker was falling behind rivals in AI capabilities. According to the companies’ joint statement, Apple concluded that Google’s technology offers the strongest foundation for Apple’s AI models and will enable innovative new user experiences.

Under the agreement, Google’s Gemini will underpin a more advanced, context-aware Siri designed to handle natural language interactions more effectively. The partnership aims to deliver richer AI-driven experiences across iPhone and other Apple devices, potentially addressing long-standing user frustrations with Siri’s limited capabilities.

The announcement marks a strategic pivot from Apple’s existing partnership with OpenAI, which currently powers some AI features through ChatGPT integration. While the companies did not disclose how the Google deal affects the OpenAI relationship, Monday’s announcement positions Gemini as central to Apple’s future AI roadmap.

Financial terms were not revealed, though Bloomberg previously reported Apple was considering paying approximately $1 billion annually for Gemini integration. The deal follows Apple’s evaluation of several AI partners, including OpenAI and Anthropic, according to earlier reports.

Wall Street responded positively to the news; shares of both companies rose Monday. The gains pushed Google’s market capitalization above $4 trillion in intraday trading for the first time, making it the fourth public company to reach that milestone after NVIDIA Corp., Microsoft Corp., and Apple achieved it last year.

Wedbush analyst Dan Ives characterized the partnership as positive in addressing concerns about Apple’s AI strategy, which has stalled.

Apple emphasized the collaboration maintains its privacy commitments. Apple Intelligence will continue operating primarily on users’ devices or through the company’s Private Cloud Compute framework, meaning Google will not directly receive Apple user data—a critical assurance for Apple’s privacy-conscious customer base.

The partnership represents both a pragmatic solution and a potential vulnerability for Apple, analysts say. While the company acknowledges difficulty developing competitive in-house AI models, the arrangement allows Apple to avoid the massive infrastructure investments rivals have made in GPUs and data centers. Industry observers suggest Apple is likely to continue internal AI development as a hedge, given the technology’s strategic importance.

“Apple is making a disciplined decision to prioritize user experience and system integration over competing in the large language model arms race,” said Mitch Ashley, vice president and practice lead, DevOps and AppDev, at The Futurum Group. “Gemini gives Apple a mature foundation without forcing it to own the volatility of model development. This move reflects confidence that differentiated value comes from how AI is applied across products, not from branding a proprietary model.”

“At a broader level, this agreement signals a pragmatic phase in AI platform strategy, where partnerships matter more than vertical control,” Ashley added. “As AI becomes infrastructure, vendors will increasingly separate model supply from experience design, control surfaces, and trust boundaries, which is where long-term differentiation and customer loyalty are built.”

For Google, the deal validates Gemini’s position as leading AI technology and provides another major deployment following improvements since the Gemini 3 launch in November 2025. The partnership may also offset costs Google pays Apple for default search engine placement in Safari.

Apple is expected to report approximately 11% year-over-year iPhone sales growth for the December quarter, with total quarterly profits forecast of near $39 billion. The company is banking that enhanced AI capabilities will drive device sales after several challenging years for its flagship product.