---
title: "Changes to Stream speech (SSE)"
method: POST
path: "/waves/v1/tts/live"
---

# Changes to Stream speech (SSE)

`POST /waves/v1/tts/live`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 9 of 18 revisions.

- **2026-09-01** `016767abfcbe`: 1 breaking, 1 warning
- **2026-08-06** `1ebfdae423bc`: 1 info
- **2026-08-04** `319860909b8e`: 1 info
- **2026-07-21** `e7bf0ba9b6d3`: 6 info
- **2026-07-09** `a98255495bf2`: 1 info
- **2026-07-03** `4e12941c9cb5`: 17 info
- **2026-06-18** `237c13bd5125`: 1 info
- **2026-06-05** `84568ef72040`: 1 breaking
- **2026-06-01** `30b1a7339197`: 1 info

## Changes

- **2026-09-01** `016767abfcbe`: 1 breaking, 1 warning
  - the `text` request property's minLength was increased from `0` to `1`
  - the `text` request property's maxLength was set to `8000`
- **2026-08-06** `1ebfdae423bc`: 1 info
  - added the new optional request property `math_notation`
- **2026-08-04** `319860909b8e`: 1 info
  - added the new optional `header` request parameter `x-expire-content`
- **2026-07-21** `e7bf0ba9b6d3`: 6 info
  - added the new `auto` enum value to the request property `language`
  - added the new `auto` enum value to the request property `number_pronunciation_language`
  - added the new `nl` enum value to the request property `language`
  - added the new `nl` enum value to the request property `number_pronunciation_language`
  - added the new `sv` enum value to the request property `language`
  - added the new `sv` enum value to the request property `number_pronunciation_language`
- **2026-07-09** `a98255495bf2`: 1 info
  - added the new optional request property `number_pronunciation_language`
- **2026-07-03** `4e12941c9cb5`: 17 info
  - added the new `ar` enum value to the request property `language`
  - added the new `de` enum value to the request property `language`
  - added the new `el` enum value to the request property `language`
  - added the new `fi` enum value to the request property `language`
  - added the new `fr` enum value to the request property `language`
  - added the new `id` enum value to the request property `language`
  - added the new `it` enum value to the request property `language`
  - added the new `ja` enum value to the request property `language`
  - added the new `ko` enum value to the request property `language`
  - added the new `ms` enum value to the request property `language`
  - added the new `no` enum value to the request property `language`
  - added the new `pl` enum value to the request property `language`
  - added the new `pt` enum value to the request property `language`
  - added the new `ru` enum value to the request property `language`
  - added the new `tr` enum value to the request property `language`
  - added the new `vi` enum value to the request property `language`
  - added the new `zh` enum value to the request property `language`
- **2026-06-18** `237c13bd5125`: 1 info
  - the `language` request property default value `en` was removed
- **2026-06-05** `84568ef72040`: 1 breaking
  - removed the enum value `auto` of the request property `language`
- **2026-06-01** `30b1a7339197`: 1 info
  - added the new optional request property `word_timestamps`

---

[Operation](https://skmtc.dev/smallest-inc/apis/waves-tts-api/docs/waves/v1/tts/live/post.md) - [API](https://skmtc.dev/smallest-inc/apis/waves-tts-api.md) - [Page](https://skmtc.dev/smallest-inc/apis/waves-tts-api/changes/waves/v1/tts/live/post)