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Fact · Transcription

72seconds per hour of audio

Scaled to one hour, the 9to5Mac test's 9 seconds for a 7-minute-31-second episode works out to about 72 seconds of processing for an hour of audio.

Checked against its source on October 17, 2026

How it is calculated
7 min 31 s = 451 s; 9 x (3600 / 451) = 71.8, rounded to 72

Calculated from

Cited on

Apple's speech API: about 72 seconds per hour of audio | Yap