Vapi helps developers build, test, and deploy voice agents at scale. We enable everything in between the raw models and production, including telephony, test suites, and real-time analytics.
The ability to adjust the speed of the voice is available in Vapi's settings. Specifically, you can set the 'speed' parameter for the voice when configuring your assistant. This setting allows you to control the playback speed of the voice output. You can refer to the voice configuration section of the documentation for more details on how to adjust this parameter supportChanging Speed of Voices.