The latest Apple betas like iOS 13.2 have a feature that lets you delete your Siri audio history in settings.
In addition to offering an explicit opt-in, Apple has promised that only employees, and not contractors, will be involved in reviewing the audio clips. However, this doesn’t stop the automated text transcriptions of your Siri requests from being transmitted to Apple, irrespective of whether you opt-in or -out, although they will pseudonymized and dissociated from your Apple ID. What’s more, these transcripts could be reviewed by employees and contractors.
I’m glad that Apple is adding this feature, and given its privacy stance I’m surprised it’s a feature we don’t already have.
Check It Out: iOS 13.2 Will Let You Delete Your Siri Audio History