WWDC26: Discover generated subtitles and subtitle styles | Apple
Apple's WWDC26 adds on-device AI-generated subtitles via speech transcription and translation for video playback.
“Apple AI generated subtitles can be created live locally on the device as the media plays.”
At WWDC26, Apple introduced automatic AI-generated subtitles that run locally on-device, using a speech-to-text model for transcription and a translation model for additional languages, with no developer implementation required. It matters as another example of Apple pushing on-device AI for accessibility, but it is an incremental platform feature rather than a major AI industry signal.