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