Languages & Models

Languages

The service passes the language value straight through to the upstream STT endpoint. Use the language code expected by the upstream model.

Common examples:

• zh — Chinese
• en — English
• auto — let the upstream auto-detect the language

Real-time, segment, and batch jobs all accept a language field. In the realtime gateway, update the language at any time with a session.update message.

Model and capability identifiers

• model — offline STT model override (default whisper-large-v3-turbo)
• sttModel / stt_model — realtime STT model selection
• normalizerModel / normalizer_model — text normalizer model selection
• backend — upstream backend selection

Not all model fields are forwarded by the gateway; see Session Configuration for the current whitelist.

Specific identifier values depend on the upstream provider and are not contractually fixed by this gateway.

See also

• Live Translation — source language, target language, auto-detection, and code-switching
• Segment Transcription — sync multipart parameters
• Batch Jobs — async audio_url parameters
• Session Configuration — realtime session.update fields