---
title: "Changes to Generate sound effects"
method: POST
path: "/v1/sound_effect"
---

# Changes to Generate sound effects

`POST /v1/sound_effect`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 11 of 67 revisions.

- **2026-10-23** `48c998a7f98f`: 1 info
- **2026-10-02** `ef7e1923afaf`: 1 info
- **2026-08-31** `4491b57b5860`: 1 breaking, 1 info
- **2026-08-07** `73a12c23285c`: 2 info
- **2026-07-06** `8b1c682294d7`: 1 info
- **2025-12-04** `6dab1bdab5d3`: 2 info
- **2025-12-03** `c2a88516fa0c`: 1 info
- **2025-12-03** `76b3962cf49e`: 1 info
- **2025-11-04** `6902fa9494c5`: 1 info
- **2025-10-22** `90724848e40f`: 1 breaking, 4 warning, 4 info
- **2025-10-09** `5279ac861229`: 1 info

## Changes

- **2026-10-23** `48c998a7f98f`: 1 info
  - added `subschema #2: mirelo_sfx_2_0` to the request body `oneOf` list
- **2026-10-02** `ef7e1923afaf`: 1 info
  - added the optional property `reason` to the response with the `400` status
- **2026-08-31** `4491b57b5860`: 1 breaking, 1 info
  - removed `subschema #1, subschema #3` from the `oneOf[subschema #1: seed_audio]/referenceAudios/items/` request property `anyOf` list
  - added `subschema #1, subschema #3` to the `oneOf[subschema #1: seed_audio]/referenceAudios/items/` request property `anyOf` list
- **2026-08-07** `73a12c23285c`: 2 info
  - added the non-success response with the status `400`
  - added the required property `estimatedCost` to the response with the `200` status
- **2026-07-06** `8b1c682294d7`: 1 info
  - added `subschema #1: seed_audio` to the request body `oneOf` list
- **2025-12-04** `6dab1bdab5d3`: 2 info
  - the `model` request property default value `eleven_text_to_sound_v2` 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_text_to_sound_v2` was added
- **2025-12-03** `76b3962cf49e`: 1 info
  - the `model` request property default value `eleven_text_to_sound_v2` was removed
- **2025-11-04** `6902fa9494c5`: 1 info
  - the `model` request property default value `eleven_text_to_sound_v2` was added
- **2025-10-22** `90724848e40f`: 1 breaking, 4 warning, 4 info
  - the request's body type changed from `object` to no type
  - removed the request property `duration`
  - removed the request property `loop`
  - removed the request property `model`
  - removed the request property `promptText`
  - added request discriminator
  - added `subschema #1: eleven_text_to_sound_v2` to the request body `oneOf` list
  - added the non-success response with the status `429`
  - the `id` response's property pattern `^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12})$` was added for the status `200`
- **2025-10-09** `5279ac861229`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/runwayml/apis/runwayml-api/docs/v1/sound_effect/post.md) - [API](https://skmtc.dev/runwayml/apis/runwayml-api.md) - [Page](https://skmtc.dev/runwayml/apis/runwayml-api/changes/v1/sound_effect/post)