---
title: "Changes to OpenAI-compatible speech synthesis"
method: POST
path: "/api/v1/audio/speech"
---

# Changes to OpenAI-compatible speech synthesis

`POST /api/v1/audio/speech`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 14 revisions.

- **2026-11-05** `27a42994f521`: 1 warning
- **2026-11-04** `9518b716e16d`: 1 info
- **2026-09-29** `cfba8f835c4f`: 1 breaking

## Changes

- **2026-11-05** `27a42994f521`: 1 warning
  - the `input` request property's maxLength was set to `50000`
- **2026-11-04** `9518b716e16d`: 1 info
  - added the new optional request property `applyPronunciation`
- **2026-09-29** `cfba8f835c4f`: 1 breaking
  - removed the enum value `v3` of the request property `engine`

---

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