Mid-conversation interruption AND end_call sometimes doesn't fire

Support Help
1

  1. Mid-conversation interruption — How do I make the agent cut off the caller mid-sentence when they go off-topic (solicitations, wrong number, personal chat)? Prompt instructions like “interrupt immediately” don’t work because the LLM only sees text after end-of-utterance. Does Retell support agent-initiated barge-in, or a webhook on partial transcripts I can hook into?

  2. end_call sometimes doesn’t fire — ~10-15% of calls, the agent speaks a closing line (“have a good day”, “bye now”) but skips the end_call function, so the line stays open. I’ve already tightened the function description. Is there a model setting, agent option, or server-side safety net to make this reliable?

2
  1. You can set interruption sensitivity higher than what you currently have set up to so the AI will be more sensitive.
  2. I recommend checking the prompt to make sure it invoke the end_call function. For example, — feel free to call us back at (999) 999-9999 when you’re ready." then invoke end_call.
3
  1. Interruption sensitivity is at it’s highest but still it waits until caller finishes then talks no matter how off topic the caller is.
  2. I will try the word “Invoke” currently I am just calling or saying agent to trigger end_call, but sometimes it says the ending line and waits.
4

Hi @repairappliance085 can you share relevant call Ids for both of the scenarios. Best Regards