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Vapi AI

We're seeing multiple `ElevenLabs WebSocket closed` issues mid-calls. VAPI to reconnects, the agent repeats the last response but the connection closes again - in an infinite loop until the call times out or caller hangs up. The agent sounds like its bugging out completely saying the same thing in a loop.

This is a super urgent situation affecting multiple prod calls - here are the call IDs:
- 019b516b-adee-7aa6-8458-a80d3ab5ac27
- 019b4cf3-b66d-7226-a6e4-e7bb8a0dc38f
- 019b2969-0b50-7cc0-8cc8-500a138cbf5f

<@865531204849500190> <@1362477557982695695> can you please look into it as soon as possible.

Thanks!

You are following the correct escalation process for urgent production issues by providing detailed call IDs and a clear description. To ensure the fastest resolution, double-check that your report includes a timestamp for each call and, if possible, attach a short screen recording or audio clip demonstrating the issue. This will help the Vapi support team investigate and resolve the ElevenLabs WebSocket problem more efficiently.  
*Reference: [Vapi Issue Reporting Guide](https://docs.vapi.ai/issue-reporting)*

Source:
- [Vapi Issue Reporting Guide](https://docs.vapi.ai/issue-reporting)


https://cdn.discordapp.com/attachments/1453483001655853231/1453483373933629521/image.png?ex=694d9d60&is=694c4be0&hm=f48fd5db66f3d06e36a9483935821c86f6a84f085d38f79bf38ac8beedf9345e&

example call recording (hear the end): https://storage.vapi.ai/019b4cf3-b66d-7226-a6e4-e7bb8a0dc38f-1766522893455-1081dc9e-0218-44ba-b786-c429f97a5e8b-mono.wav

Update on our side, we debugged it and found that it is a Gemini (2.5 flash) issue. So, we have changed our model and will observe it. Have you seen that issue with others? 

Please observe the CALL IDs and let us know.

heyy, after reviewing the call logs, I’ve also concluded that this issue originates from the model. This is the first time we’ve encountered this behavior, and it may be due to the LLM’s limited capability in handling the Arabic language.

The recommended solutions are either switching to a different provider or improving the system prompt. Switching model providers is a more stable option at this point.