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# chorus

Purpose: Agent-readable model facts.
Last updated: 2026-10-01

Text-to-speech model that speaks in a built-in voice, a voice cloned from reference audio, or a voice designed from a description.

## Capabilities

| Field | Value |
| --- | --- |
| Model ID | `chorus` |
| Input modalities | Text, Audio |
| Output modalities | Audio |
| Endpoints | `/v1/audio/speech`, `/v1/audio/voices`, `/v1/audio/voices/design` |
| Supported parameters | `response_format`, `language`, `voice`, `instructions`, `speed`, `stream_format`, `ref_audio`, `ref_text`, `speaker_embedding`, `x_vector_only_mode` |

## Related links

- [Model catalog](https://sprag.ai/models/index.md)
- [Pricing](https://sprag.ai/pricing)