What are the best ways to let my assistant speak in a different way in every call Vapi AI #prompt-tip

What are the best ways to let my assistant speak i...

11/09/2025, 3:16 PM

Hey everybody i hope y'all are having a great day! What is the best way to let my assistant speak in different ways every new call and stop sounding robotic and repetitive while executing all the instructions which is in my case collecting certain type of info.

Ramik

11/09/2025, 3:16 PM

Hi there, Thank you for your message. Our team is currently out of the office. We operate Monday through Friday, from 9:00 AM to 8:00 PM Pacific Standard Time (PST). We’ll get back to you as soon as possible during our normal business hours. If your message is urgent, please mark it accordingly or include “URGENT” in the subject line, and we’ll do our best to respond promptly. Warm regards, Vapi Customer Support Team

Ramik

11/11/2025, 7:45 PM

Hi Shadow101, To ensure your assistant starts speaking only after the client answers on outbound calls, you can configure the assistant's behavior by setting the

firstMessageMode

assistant-waits-for-user

. This setting ensures the assistant waits for the user to speak before it begins its interaction. Here's how you can configure it:

Copy code

json
{
  "firstMessageMode": "assistant-waits-for-user",
  ...
}

This configuration will help manage the timing of the assistant's response, ensuring it starts speaking at the appropriate time. For more details, you can refer to our [Assistant-based warm transfer](https://docs.vapi.ai/calls/assistant-based-warm-transfer) document. If you need further customization on speech handling, such as integrating with PlayHT for voice speed or speech endpointing configurations, more information can be found in the [Speech configuration](https://docs.vapi.ai/customization/speech-configuration) guide.

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