Apple says its AI is still private, even when it's running on Google's servers

Apple confirmed at its Worldwide Developers Conference that its new Siri AI assistant runs on Google servers using Nvidia hardware, while the company maintains that user data remains private through encryption and on-device processing [1]. The arrangement marks a departure from Apple's prior AI infrastructure, which relied entirely on local device processing or its own Private Cloud Compute system [1]. Apple executives, including software chief Craig Federighi, briefed press after the keynote to detail how the company intends to preserve privacy despite routing requests through Google's data centers [1]. The company has long positioned privacy as a competitive advantage, using encryption designed to block access by anyone — including Apple employees — and emphasizing on-device processing to minimize data leaving a user's device [1]. Apple's shift to Google's Gemini models reflects the computational demands of modern generative AI [1]. The language and reasoning models that can operate locally on an iPhone or Mac are relatively small, limiting their capabilities [1]. Gemini, first announced by Google in December 2023, is a family of large language models trained natively on multiple data types including text, code, images, audio, and video [2]. The technology is distributed in tiers, from efficient on-device versions to high-compute models for complex reasoning [2]. Apple's Private Cloud Compute system was a partial solution but required Apple's own server hardware; supporting Siri AI at scale would have required a data center buildout the company has so far avoided [1]. The partnership places two of the Big Five U.S. technology companies — Apple and Alphabet, Google's parent — in a direct operational dependency [10]. Generative AI tools have proliferated since the AI boom of the 2020s, driven by advances in deep neural networks and transformer-based large language models [3]. The sector has drawn scrutiny over data practices, energy consumption, and the use of copyrighted training material [3]. Apple, founded in 1976 and headquartered in Cupertino, California, has grown to become the world's largest company by market capitalization, valued at over $4 trillion as of October 2025 [4]. The company has consistently ranked among the world's most valuable brands [4]. Apple says its AI models remain encrypted even when processed on Google's infrastructure, extending its privacy architecture to third-party servers [1]. The company did not disclose the specific Gemini model tier being used, nor the financial terms of the arrangement [1].