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Apple Unveils On-Device Transcription APIs in iOS 26 and macOS Tahoe

Developer beta testing shows the new tools process lengthy audio and video files in a fraction of the time of cloud-based services.

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Overview

  • Apple’s iOS 26 and macOS Tahoe developer betas introduce SpeechAnalyzer and SpeechTranscriber modules to its Speech framework.
  • Beta tests by MacStories’ John Voorhees using the Yap command-line tool showed a 34-minute video was transcribed in 45 seconds, a 55% improvement over MacWhisper’s top Whisper model.
  • The performance gain stems from on-device processing that eliminates the network latency inherent in cloud-based transcription services.
  • Accuracy of Apple’s transcription API matches OpenAI’s Whisper while delivering more than double the speed in preliminary benchmarks.
  • Developers can integrate the new APIs across iPhone, iPad, Mac, and Vision Pro platforms to add faster speech-to-text features to their apps.