Siri is a virtual assistant and chatbot developed by Apple Inc.. It is integrated into iOS, iPadOS, watchOS, macOS, Apple TV, audioOS, and visionOS operating systems. Siri utilizes voice queries, gesture-based control, focus-tracking, and a natural-language user interface to answer questions, offer recommendations, and perform actions by delegating requests to various internet services. With ongoing use, Siri adapts to individual user's language, searches, and preferences to provide customized results.
Siri was first released as a standalone app in February 2010, before Apple acquired it in April 2010. It was introduced as a beta version with the iPhone 4S in October 2011. Since then, Siri has become an integral part of Apple's products. Siri is available on almost every Apple device, including iPhones, iPads, Macs, Apple Watches, Apple TVs, and HomePods. Apple has promised a new version of Siri in spring 2026 with the release of iOS 26.4. This update will include a reliance on large language models (LLMs) and has been updated from the ground up. Apple Intelligence, which includes the new Siri, is a free feature for users with supported devices.