All features
Speech Recognition
Real-time speech-to-text for live events from several leading engines, with the best one recommended for each language and a dictionary built from your event.
- Languages
- 104
- Engines
- 5
- Latency
- 3s
- Speechmatics
- Deepgram
- Gladia
- AWS Transcribe
- Microsoft MAI-Transcribe
What it does
The right engine for each language
Line 21 recommends the best-performing engine for every language, and you can switch engines at any time.
Your words, recognised
AI Context turns your scripts, slides and speaker names into a dictionary of words the engine should expect.
Speakers and blended languages
Some engines tell speakers apart and follow conversations that switch between languages mid-sentence.
Audio from anywhere
Feed audio from a browser microphone, the Line 21 desktop app, or an RTMP or SRT video stream.
Other features
Tell us about your event
We'll help you choose the right mix of captioners, AI and delivery for your audience.