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

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

# RealtimeServerEventConversationItemTruncated

Returned when an earlier assistant audio message item is truncated by the client with a `conversation.item.truncate` event. This event is used to synchronize the server's understanding of the audio with the client's playback. This action will truncate the audio and remove the server-side text transcript to ensure there is no text in the context that hasn't been heard by the user.

## OpenAPI definition

```yaml
openapi: 3.0.0
info:
  title: OpenAI API
  version: 2.3.0
servers:
  - url: https://api.openai.com/v1
components:
  schemas:
    RealtimeServerEventConversationItemTruncated:
      type: object
      description: >
        Returned when an earlier assistant audio message item is truncated by
        the 

        client with a `conversation.item.truncate` event. This event is used to 

        synchronize the server's understanding of the audio with the client's
        playback.


        This action will truncate the audio and remove the server-side text
        transcript 

        to ensure there is no text in the context that hasn't been heard by the
        user.
      properties:
        event_id:
          type: string
          description: The unique ID of the server event.
        type:
          type: string
          enum:
            - conversation.item.truncated
          description: The event type, must be `conversation.item.truncated`.
          x-stainless-const: true
        item_id:
          type: string
          description: The ID of the assistant message item that was truncated.
        content_index:
          type: integer
          description: The index of the content part that was truncated.
        audio_end_ms:
          type: integer
          description: |
            The duration up to which the audio was truncated, in milliseconds.
      required:
        - event_id
        - type
        - item_id
        - content_index
        - audio_end_ms
      x-oaiMeta:
        name: conversation.item.truncated
        group: realtime
        example: |
          {
              "event_id": "event_2526",
              "type": "conversation.item.truncated",
              "item_id": "msg_004",
              "content_index": 0,
              "audio_end_ms": 1500
          }
```