---
title: "List Tts Models"
method: GET
path: "/v1/voice/tts-models"
tags: ["voice"]
---

# List Tts Models

`GET /v1/voice/tts-models`

## Query parameters

- `provider` 'elevenlabs' | 'inworld', nullable

## Response `200`

Successful Response

- TTSModelListResponse
  - `models` TTSModelOut[]
    - `provider` 'elevenlabs' | 'inworld', required
    - `external_id` string, required
    - `display_name` string, required
    - `description` string, nullable
    - `is_default` boolean
    - `capabilities` TTSModelCapabilities, required — Stable, OpenAPI-visible capability contract for a catalog model. ``tuning`` is deliberately required. The catalog is validated at import time so an incomplete entry fails fast instead of exposing a model that clients cannot configure safely.
      - `multilingual` boolean, required
      - `latency_tier` 'lowest' | 'low' | 'standard', required
      - `max_sample_rate` integer, required
      - `delivery_mode` boolean, nullable
      - `expressive_speech` boolean, nullable
      - `stability_presets` boolean, nullable
      - `tuning` TTSTuningCapabilities, required — Controls a client may expose for one TTS model.
        - `speed` TTSSpeedCapability, required
          - `min` number, required
          - `max` number, required
          - `default` number, required
        - `delivery_mode` TTSDeliveryModeCapability
          - `values` string[], required
          - `default` 'STABLE' | 'BALANCED' | 'CREATIVE', required
        - `temperature` TTSTemperatureCapability
          - `min_exclusive` number, required
          - `max` number, required
          - `default` number, required
  - `total` integer, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/oneloop-hq/apis/feather-api.md) · [All operations](https://skmtc.net/oneloop-hq/apis/feather-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/oneloop-hq/feather-api/revisions/9cd7291d4228/schema)