Fact · Voice privacy and security
Google says that when the voice and audio activity setting is on, samples of saved audio are analyzed by trained reviewers who listen to, transcribe and annotate them, for some audio technology improvements.
Quote found word for word on the live source, last checked October 19, 2026
In the source's own words
“samples of audio saved on Google servers when this setting is on are analyzed by trained reviewers, who listen to, transcribe, and annotate it”
Manage audio recordings in your Web & App Activity, Google, n.d., Audio review process.
Open the original- What it measures
- Google's help page on the voice and audio activity setting, under the heading on the audio review process. The review applies to audio saved to a signed-in account.
- What it does not show
- Google says only 'some' audio technology improvements use reviewers, and gives no rate or sample size. The review is tied to the opt-in setting.
In the data
A row of How Long Voice Assistants Keep Your Recordings, as Google Assistant audio, trained reviewers: samples of audio saved on Google servers when this setting is on are analyzed by trained reviewers days.
- Service
- Google Assistant
- What is kept
- Audio recordings
- When
- If you opt in
- Reviewed by people
- Only if you opt in
- As of
- 2026-10
- Note
- Only for some audio technology improvements, and only when the setting is on.