Dataset or benchmark
api/SpeechRecognition.json (MDN browser-compat-data)
MDN Web Docs (Mozilla), GitHub, 2026
Read the originalRead on October 17, 2026
- What it is
- The machine-readable compatibility record for SpeechRecognition that feeds MDN's browser support tables. It lists the first version of each browser that supports the interface, with and without a vendor prefix.
- How much weight it carries
- Community-maintained data reviewed by Mozilla and other browser engineers. It is the same data behind MDN's compatibility tables, but it records version numbers as reported by each vendor, so a newer release can change it.
Facts taken from this source
- MDN's compatibility data lists Chrome's unprefixed SpeechRecognition from version 139, and a webkit-prefixed version from version 33.
“{ "version_added": "139" }, { "prefix": "webkit", "version_added": "33", "notes": "You'll need to serve your code through a web server for recognition to work." }” (Member support list for chrome)
- MDN's compatibility data notes that Chrome's prefixed version needs the code to be served through a web server for recognition to work.
“You'll need to serve your code through a web server for recognition to work.” (Chrome support note)
- MDN's compatibility data lists Edge's support for SpeechRecognition as a mirror of Chrome's, because Edge uses the same engine.
“"edge": "mirror", "firefox": { "version_added": "preview" }, "firefox_android": "mirror"” (Edge support entry)
- MDN's compatibility data lists Firefox's support for SpeechRecognition only as preview, not as a numbered stable release.
“"edge": "mirror", "firefox": { "version_added": "preview" }, "firefox_android": "mirror"” (Firefox support entry)
- MDN's compatibility data lists Safari's webkit-prefixed SpeechRecognition from version 14.1.
“"safari": { "prefix": "webkit", "version_added": "14.1"” (Safari support entry)
Pages that rest on this source
- Web Speech API: Speech Recognition in the BrowserGuide
- How do you add speech recognition to a React or React Native app?Question
- How do you add speech recognition to a website with JavaScript?Question
- Which browsers support speech recognition?Question
- Web Speech APIGlossary
- Why does speech recognition show a network or not-allowed error?Question