Example

{
  "type": "response.done",
  "event_id": "event_CCXHxcMy86rrKhBLDdqCh",
  "response": {
    "object": "realtime.response",
    "id": "resp_CCXHw0UJld10EzIUXQCNh",
    "status": "completed",
    "status_details": null,
    "output": [
      {
        "id": "item_CCXHwGjjDUfOXbiySlK7i",
        "type": "message",
        "status": "completed",
        "role": "assistant",
        "content": [
          {
            "type": "output_audio",
            "transcript": "Loud and clear! I can hear you perfectly. How can I help you today?"
          }
        ]
      }
    ],
    "conversation_id": "conv_CCXHsurMKcaVxIZvaCI5m",
    "output_modalities": [
      "audio"
    ],
    "max_output_tokens": "inf",
    "audio": {
      "output": {
        "format": {
          "type": "audio/pcm",
          "rate": 24000
        },
        "voice": "alloy"
      }
    },
    "usage": {
      "total_tokens": 253,
      "input_tokens": 132,
      "output_tokens": 121,
      "input_token_details": {
        "text_tokens": 119,
        "audio_tokens": 13,
        "image_tokens": 0,
        "cached_tokens": 64,
        "cached_tokens_details": {
          "text_tokens": 64,
          "audio_tokens": 0,
          "image_tokens": 0
        }
      },
      "output_token_details": {
        "text_tokens": 30,
        "audio_tokens": 91
      }
    },
    "metadata": null
  }
}

response.output_item.added

Returned when a new Item is created during Response generation.