Model Versions
Resemble Ultra is the current text-to-speech model for new and upgraded voices. The synthesis API automatically uses the model associated with your voice_uuid, so you do not need to select a model in the request.
resemble-ultra identifies the voice model version. Do not pass it as a model field when making text-to-speech requests.
Resemble Ultra
Resemble Ultra is available through synchronous synthesis, HTTP streaming, and WebSocket streaming. To move an existing voice to Ultra, visit the Voices page and upgrade the voice.
End-of-Life Text-to-Speech Models
All previous Resemble text-to-speech models have reached end of life. Voices that still use one of these versions can no longer generate audio and must be upgraded to Resemble Ultra.
The historical version codes below are listed for reference only. They are not valid model selections for synthesis requests.