Browser speech recognition tutorial covers Web Speech API limits

Key points

• The Web Speech API sends microphone audio to a browser-chosen cloud engine, so transcription results vary across browsers.
• Developers can't control voice models, and the API lacks reliable custom vocabulary support, such as for the brand name ElevenLabs.
• The API has no speaker diarization and no server-side streaming or audio file uploads, only live microphone input.
• The source recommends ElevenLabs Scribe v2 Realtime for commercial products, citing latency below 150 ms and 90+ languages.

Why it matters for marketers: Teams building voice features in web apps should weigh browser-dependent results and missing features before relying on native speech recognition in production.