Engines
List an engine's speaker voices
The voices an engine can speak as. Use an id from here as voice.tts.voice (composed engines) or voice.realtime.voice (realtime engines). Sarvam and Gemini publish fixed rosters; the ElevenLabs-backed engines are fetched and cached for an hour, and if ElevenLabs cannot be reached the last good list is returned with stale: true rather than an error.
GET
List an engine's speaker voices
Authorizations
Response
Available voices

