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Apple is preparing a significant update to Siri that will bring Google's Gemini models into the assistant's core intelligence layer.

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The change is expected to arrive with iOS 26.4, which Apple has scheduled for a late-February release window, marking the first public step in a broader transition to a new foundation-model stack for Apple Intelligence.

The Gemini integration follows Apple's decision to rely on external large language models while continuing to keep user data processing on-device or within Apple Private Cloud Compute. The company has said the goal is to raise Siri's language understanding and response quality without moving personal data onto third-party servers.

HOW GEMINI WILL BE USED INSIDE SIRI

Apple's agreement with Google gives Siri access to Gemini models that will run inside Apple's own computing environment rather than directly on Google's infrastructure. Requests that require more complex language reasoning will be routed through Apple's private cloud, where Gemini models operate in isolated environments designed to keep user data separate from external systems.

In practical terms, this means Siri will be able to handle longer, more complex queries, follow multi-step instructions, and generate more natural-sounding replies. Apple has already been using its own smaller models for tasks like on-device transcription and command execution. Gemini fills the gap for broader conversational and generative language capabilities that those local models cannot yet handle.