Voices
List Speech-to-Speech Voices
List voices for speech-to-speech agents.
GET
List Speech To Speech Voices
Read only
Returns Speech to Speech voices with the languages and realtime LLM paths each voice supports. Use this endpoint when building a Speech to Speech voice selector or validating an agent configuration before saving it.
Recommended. This endpoint is part of the public
/v1 API reference and is the supported path for new integrations. See the migration guide for versioning guidance.When to use this
- Building S2S agents: agents with
pipeline_type: "Speech_To_Speech"can only use voices from this list, not the general List Voices catalog. - Voice selectors: populate the voice dropdown in your own tooling when the operator has chosen the Speech to Speech pipeline.
- Pre-save validation: confirm the voice, language, and realtime LLM combination is supported before creating or publishing the agent.
voices array and returns the full list without pagination metadata.
Related endpoints
- Speech To Speech Agents: configure realtime agents.
- List Voices: list cascaded TTS voices.
- List Voice Languages: inspect language choices for one voice.
List Speech To Speech Voices