---
title: "Voice isolation"
method: POST
path: "/v1/voice_isolation"
tags: ["Start generating"]
---

# Voice isolation

`POST /v1/voice_isolation`

This endpoint will start a new task to isolate the voice from the background audio. Audio duration must be greater than 4.6 seconds and less than 3600 seconds.

## Headers

- `X-Runway-Version` '2024-11-06', required

## Request body

- object
  - `audioUri` union, required — A HTTPS URL, Runway or data URI containing an encoded audio. See [our docs](/assets/inputs#audio) on audio inputs for more information.
    - string — A HTTPS URL.
    - string — A Runway upload URI. See https://docs.dev.runwayml.com/assets/uploads for more information.
    - string — A data URI containing encoded media.
  - `model` 'eleven_voice_isolation', required

## Response `200`

The task that was created.

- object
  - `id` string, uuid, required — The ID of the task that was created. Use this to retrieve the task later.

## Other responses

- `429` — You have exceeded the rate limit for this endpoint.

## Changes

- **2025-12-04** `6dab1bdab5d3` — 2 info
  - the `model` request property default value `eleven_voice_isolation` was removed
  - added the media type `application/json` for the response with the status `429`
- **2025-12-03** `c2a88516fa0c` — 1 info
  - the `model` request property default value `eleven_voice_isolation` was added
- **2025-12-03** `76b3962cf49e` — 1 info
  - the `model` request property default value `eleven_voice_isolation` was removed
- **2025-11-04** `6902fa9494c5` — 1 breaking, 2 info
  - removed `subschema #1, subschema #2` from the `oneOf[subschema #1: eleven_voice_isolation]/audioUri` request property `anyOf` list
  - added `subschema #1, subschema #2, subschema #3` to the `oneOf[subschema #1: eleven_voice_isolation]/audioUri` request property `anyOf` list
  - the `model` request property default value `eleven_voice_isolation` was added
- **2025-10-22** `90724848e40f` — 1 breaking, 2 warning, 4 info
  - the request's body type changed from `object` to no type
  - removed the request property `audioUrl`
  - removed the request property `model`
  - added request discriminator
  - …3 more

[Full history](https://skmtc.dev/runwayml/apis/runwayml-api/changes/v1/voice_isolation/post.md)

---

[API](https://skmtc.dev/runwayml/apis/runwayml-api.md) · [All operations](https://skmtc.dev/runwayml/apis/runwayml-api/llms.txt) · [OpenAPI document](https://skmtc.dev/runwayml/apis/runwayml-api/revisions/02b60786c778?raw)