How to capture real-time agent transcriptions during conversations

When building conversation history features, there are several ways to capture agent transcriptions in real-time, even when users disconnect mid-conversation.

Using conversation_item_added Events

The simplest approach is to use the conversation_item_added event. In the latest agent version, with RoomInputOptions.close_on_disconnect enabled (enabled by default), you'll receive the incomplete agent turn immediately when a user leaves the room.

Manual Session Closure

Alternatively, you can manually trigger the capture of an incomplete agent turn by calling:

await session.aclose()

This will stop the agent and flush any incomplete agent turn.

Real-time Transcription Options

For more granular real-time transcription:

1. Use the transcription_node to collect transcripts as they are generated

2. For TTS-aligned transcriptions, you can implement solutions using Cartesia or ElevenLabs (note: this feature is not available with NovaSonic)

For detailed implementation of TTS-aligned transcriptions, refer to our documentation on TTS-aligned transcriptions.