---
title: "RealtimeServerEventResponseAudioTranscriptDelta"
url: "https://kongair.terwilligar.com/apis/openai-api-2-3-0/versions/ea92d048-c746-4ead-a6a8-da28d93137d1/schemas/RealtimeServerEventResponseAudioTranscriptDelta"
---

> Full API specification: https://kongair.terwilligar.com/apis/openai-api-2-3-0/versions/ea92d048-c746-4ead-a6a8-da28d93137d1.md

# RealtimeServerEventResponseAudioTranscriptDelta

Returned when the model-generated transcription of audio output is updated.

## OpenAPI definition

```yaml
openapi: 3.0.0
info:
  title: OpenAI API
  version: 2.3.0
servers:
  - url: https://api.openai.com/v1
components:
  schemas:
    RealtimeServerEventResponseAudioTranscriptDelta:
      type: object
      description: >
        Returned when the model-generated transcription of audio output is
        updated.
      properties:
        event_id:
          type: string
          description: The unique ID of the server event.
        type:
          type: string
          enum:
            - response.audio_transcript.delta
          description: The event type, must be `response.audio_transcript.delta`.
          x-stainless-const: true
        response_id:
          type: string
          description: The ID of the response.
        item_id:
          type: string
          description: The ID of the item.
        output_index:
          type: integer
          description: The index of the output item in the response.
        content_index:
          type: integer
          description: The index of the content part in the item's content array.
        delta:
          type: string
          description: The transcript delta.
      required:
        - event_id
        - type
        - response_id
        - item_id
        - output_index
        - content_index
        - delta
      x-oaiMeta:
        name: response.audio_transcript.delta
        group: realtime
        example: |
          {
              "event_id": "event_4546",
              "type": "response.audio_transcript.delta",
              "response_id": "resp_001",
              "item_id": "msg_008",
              "output_index": 0,
              "content_index": 0,
              "delta": "Hello, how can I a"
          }
```