1Labs TTS streaming error

Support Help
1

Hi Retell Support,

I’m experiencing the following error with one of my agents:

Error: 11labs TTS error in streaming
Agent ID: agent_5916a1108b58a8axxxx7c02e1
Call ID: call_ddde9f09204281aff763997f739

Could you please check what happened in this call and help me identify the cause of the issue?

Thanks.

2

Hey @jose.araujo thanks for sharing the Call ID. I have escalated this to the team for review, and we’ll provide an update as soon as we have more information.

Thank You

3

Hey @jose.araujo Team looked into call call_ddde9f09204281aff763997f739:

  • Around ~6 seconds into the call, ElevenLabs’ streaming synthesis failed transiently while rendering the sentence “Para mejorar nuestro servicio, esta llamada puede ser grabada.”
  • Our TTS layer automatically retried (retry count: 1) and the sentence was delivered to the caller a moment later — you can hear it in the recording between ~7.1s and ~9.8s.
  • The rest of the flow completed cleanly: DNI validated (76731250F), policy resolved with Reale, new plate captured (6625NMD), the Solicitud-Cambio-de-datos tool returned valid: true, and the confirmation WhatsApp was queued and sent. Total duration 240s, callSuccessful: true, ended by the agent.
  • No further TTS errors occurred during the remaining ~3.5 minutes of the call.

The 11labs TTS error in streaming log line is emitted when ElevenLabs’ streaming WebSocket errors out or closes unexpectedly mid-synthesis. In this case it was a single transient upstream hiccup and our automatic retry recovered it with no caller-visible impact and no disruption to the conversation flow. No action is required on your side.

If you start seeing this error recurring across many calls on this agent (or on a specific voice), please send us the call IDs and we will check it further

Thanks