Send this event when you want to truncate a previous assistant message’s audio.
| Name | Type | Description | Notes |
|---|---|---|---|
| eventId | String | Optional client-generated ID used to identify this event. | [optional] |
| type | String | The event type, must be "conversation.item.truncate". | |
| itemId | String | The ID of the assistant message item to truncate. | |
| contentIndex | Integer | The index of the content part to truncate. | |
| audioEndMs | Integer | Inclusive duration up to which audio is truncated, in milliseconds. |