Fact · Dictation in your apps
139Chrome version
MDN's compatibility data lists Chrome's unprefixed SpeechRecognition from version 139, and a webkit-prefixed version from version 33.
Checked against its source on October 17, 2026
In the source's own words
“{ "version_added": "139" }, { "prefix": "webkit", "version_added": "33", "notes": "You'll need to serve your code through a web server for recognition to work." }”
api/SpeechRecognition.json (MDN browser-compat-data), MDN Web Docs (Mozilla), GitHub, 2026, Member support list for chrome.
Open the original- What it measures
- The compatibility record in MDN's browser-compat-data repository, read on 2026-10-17.
- What it does not show
- The data records versions by the browser's own numbering. A page written for the prefixed version may need the prefix in code, so check the browser before shipping.