### Answer Yes, you can configure the agent's speech behavior during function execution using the Speak During Execution setting. [(1) ]() When configuring a custom function, you have two relevant options: 1. Speak during execution — When enabled, the agent speaks the moment the function is called (e.g., "One moment while I look that up") . This lets the conversation continue naturally while the function runs in the background. 2. Speak after execution — Controls whether the agent continues talking or takes other actions after the function completes, without waiting for user input. Both settings are prompt-based, meaning the LLM generates the message based on your configuration and the conversation context. Important note: If the user interrupts or talks during the function call, the agent responds normally regardless of these settings. For longer-running functions, enabling "Speak during execution" is recommended for user-facing actions so the caller isn't left in silence.

​ To learn more, see the sources I considered: [[1] Integrate any system with custom function](https://docs.retellai.com/build/single-multi-prompt/custom-function) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.