---
title: "Changes to Transcribe audio"
method: POST
path: "/v2/transcript"
---

# Changes to Transcribe audio

`POST /v2/transcript`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 5 of 6 revisions.

- **2026-09-10** `9c5f65722ea8`: 7 info
- **2026-08-27** `6900f1a10db7`: 3 info
- **2026-08-01** `f743e2ea9459`: 2 info
- **2026-07-26** `0ba6c3505b6a`: 2 breaking, 8 info
- **2026-07-13** `f23b8927e795`: 4 breaking, 6 warning, 14 info

## Changes

- **2026-09-10** `9c5f65722ea8`: 7 info
  - added the new optional request property `allOf[#/components/schemas/TranscriptOptionalParams]/speaker_options/include_speaker_confidence`
  - added the optional property `unredacted_utterances/items/speaker_confidence` to the response with the `200` status
  - added the optional property `unredacted_utterances/items/words/items/speaker_confidence` to the response with the `200` status
  - added the optional property `unredacted_words/items/speaker_confidence` to the response with the `200` status
  - added the optional property `utterances/items/speaker_confidence` to the response with the `200` status
  - added the optional property `utterances/items/words/items/speaker_confidence` to the response with the `200` status
  - added the optional property `words/items/speaker_confidence` to the response with the `200` status
- **2026-08-27** `6900f1a10db7`: 3 info
  - added the new optional request property `allOf[#/components/schemas/TranscriptOptionalParams]/language_detection_options/on_no_speech_detected`
  - added the optional property `language_detection_options/on_no_speech_detected` to the response with the `200` status
  - added the optional property `metadata` to the response with the `200` status
- **2026-08-01** `f743e2ea9459`: 2 info
  - added the new optional request property `allOf[#/components/schemas/TranscriptOptionalParams]/language_detection_options/localization`
  - added the optional property `language_detection_options/localization` to the response with the `200` status
- **2026-07-26** `0ba6c3505b6a`: 2 breaking, 8 info
  - request property `allOf[#/components/schemas/TranscriptOptionalParams]/domain` was restricted to a list of enum values
  - request property `allOf[#/components/schemas/TranscriptOptionalParams]/domain` list-of-types was narrowed by removing types `null` from media type `application/json`
  - the request property `allOf[#/components/schemas/TranscriptOptionalParams]/domain` became nullable
  - the `remove_audio_tags` request property default value `all` was added
  - the `speech_models` request property default value changed from `universal-3-5-pro` to `universal-3-5-pro, universal-2`
  - the `language_code` request property default value `en_us` was removed
  - the `language_detection` request property default value `false` was removed
  - the `min_speakers_expected` request property default value `1` was removed
  - added the new `medical-v1` enum value to the request property `allOf[#/components/schemas/TranscriptOptionalParams]/domain`
  - added the new `undefined` enum value to the request property `allOf[#/components/schemas/TranscriptOptionalParams]/domain`
- **2026-07-13** `f23b8927e795`: 4 breaking, 6 warning, 14 info
  - request property `allOf[#/components/schemas/TranscriptOptionalParams]/speech_model/oneOf[#/components/schemas/SpeechModel]/` was restricted to a list of enum values
  - request property `allOf[#/components/schemas/TranscriptOptionalParams]/speech_models/items/` was restricted to a list of enum values
  - added `#/components/schemas/SummarizationRequestBody, #/components/schemas/ActionItemsRequestBody` to the `speech_understanding/request` response property `oneOf` list for the response status `200`
  - added `#/components/schemas/SummarizationResponse, #/components/schemas/ActionItemsResponse` to the `speech_understanding/response` response property `oneOf` list for the response status `200`
  - added the new `universal-2` enum value to the `speech_model/oneOf[#/components/schemas/SpeechModel]/` response property for the response status `200`
  - added the new `universal-2` enum value to the `speech_model_used` response property for the response status `200`
  - added the new `universal-2` enum value to the `speech_models/items/` response property for the response status `200`
  - added the new `universal-3-5-pro` enum value to the `speech_model/oneOf[#/components/schemas/SpeechModel]/` response property for the response status `200`
  - added the new `universal-3-5-pro` enum value to the `speech_model_used` response property for the response status `200`
  - added the new `universal-3-5-pro` enum value to the `speech_models/items/` response property for the response status `200`
  - added the new optional request property `allOf[#/components/schemas/TranscriptOptionalParams]/redact_static_entities`
  - the `speech_models` request property default value changed from `universal-3-pro, universal-2` to `universal-3-5-pro`
  - added the new `universal-2` enum value to the request property `allOf[#/components/schemas/TranscriptOptionalParams]/speech_model/oneOf[#/components/schemas/SpeechModel]/`
  - added the new `universal-2` enum value to the request property `allOf[#/components/schemas/TranscriptOptionalParams]/speech_models/items/`
  - added the new `universal-3-5-pro` enum value to the request property `allOf[#/components/schemas/TranscriptOptionalParams]/speech_model/oneOf[#/components/schemas/SpeechModel]/`
  - added the new `universal-3-5-pro` enum value to the request property `allOf[#/components/schemas/TranscriptOptionalParams]/speech_models/items/`
  - added `#/components/schemas/SummarizationRequestBody, #/components/schemas/ActionItemsRequestBody` to the `allOf[#/components/schemas/TranscriptOptionalParams]/speech_understanding/request` request property `oneOf` list
  - removed the `location_address` enum value from the `entities/items/entity_type` response property for the response status `200`
  - removed the `location_address_street` enum value from the `entities/items/entity_type` response property for the response status `200`
  - removed the `location_city` enum value from the `entities/items/entity_type` response property for the response status `200`
  - removed the `location_coordinate` enum value from the `entities/items/entity_type` response property for the response status `200`
  - removed the `location_country` enum value from the `entities/items/entity_type` response property for the response status `200`
  - removed the `location_state` enum value from the `entities/items/entity_type` response property for the response status `200`
  - removed the `location_zip` enum value from the `entities/items/entity_type` response property for the response status `200`

---

[Operation](https://skmtc.dev/assemblyai/apis/assemblyai-api/docs/v2/transcript/post.md) - [API](https://skmtc.dev/assemblyai/apis/assemblyai-api.md) - [Page](https://skmtc.dev/assemblyai/apis/assemblyai-api/changes/v2/transcript/post)