[URGENT] Vapi fail to call OpenAI

I'm having this issue where intermittently, the voice agent will hang. I can see in logs that we get the deepgram transcript for user speech. Then no openAI azure calls. ElevenLabs websocket just opens and closes, I suppose waiting for model response that doesn't come. It's a very frustrating user experience because it takes multiple "Hello" "Are you there" responses to get back on track

  1. What is the root cause of this? Why does Vapi not consistently call our model
  2. How should we handle this when it does happen? Trigger retries on our side and not rely on the user to respond to the silence
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