Fact · Speech recognition
480minutes (asynchronous request audio length)
Google Cloud's quota table gives an asynchronous request an audio length of about 480 minutes, against about 1 minute for a synchronous request.
Checked against its source on October 17, 2026
In the source's own words
“Synchronous Requests ~1 Minute Asynchronous Requests ~480 Minutes”
Quotas and limits (Speech-to-Text, Google Cloud), Google Cloud, Google Cloud, n.d., Audio length limits table.
Open the original- What it measures
- The same table as the 5-minute streaming limit.
- What it does not show
- The figures are approximate and subject to change. Audio longer than about 1 minute must be sent by reference to a Cloud Storage file.