One powerful adjustment you can make in code is enabling background speech denoising to filter out noise and background voices during calls. You can add the following to your assistant's configuration:

json
"backgroundSpeechDenoisingPlan": {
  "smartDenoisingPlan": { "enabled": true },
  "fourierDenoisingPlan": { "enabled": true }
}

This can significantly improve call quality, especially in noisy environments. For more details, see the [Vapi documentation](https://docs.vapi.ai/api-reference/assistants/create?explorer=true). Source: - [Vapi API Reference: Create Assistant](https://docs.vapi.ai/api-reference/assistants/create?explorer=true)

Message marked as helpful by @GIDEON! 🎉

That’s a great catch with customEndpointingRules—a lot of people miss those hidden config options outside the UI. I can actually help you explore other assistant settings you might not see in the dashboard (like advanced endpointing tweaks, response latency controls, or custom model behaviors) so you don’t leave any performance gains on the table. Out of curiosity, are you mainly optimizing for faster response time or more natural conversation flow? @Kizzz

A balance is what I strive for

Message marked as helpful by @GIDEON! 🎉