Fact · Accessibility and health
Microsoft says all audio processing and caption generation in Windows live captions happens on the device, and audio, voice data and captions are not sent to the cloud or to Microsoft.
Checked against its source on October 16, 2026
In the source's own words
“All processing of audio and generation of captions from detected voice data occurs on-device. Audio, voice data, and captions never leave your device and are not shared to the cloud or with Microsoft.”
Use live captions to better understand audio, Microsoft Support, 2026, Introduction, Important note.
Open the original- What it measures
- The first time you turn live captions on, Windows asks for consent and downloads language files for on-device speech recognition.
- What it does not show
- This is Microsoft's own statement about its product. It covers live captions only, not other Windows speech features such as online voice typing.