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The Vapi Client SDKs automatically configure audio streaming to and from the client, and provide a simple interface for starting calls. The interface is equivalent across all the SDKs.

Events

  • speech-start, speech-end, and volume-level for creating animations. - message for receiving messages sent to the Server URL locally on the client, so you can show live transcriptions and use function calls to perform actions on the client.
The SDKs are open source, and available on GitHub:

Vapi Web

Add a Vapi assistant to your web application.

Vapi iOS

Add a Vapi assistant to your iOS app.

Vapi Flutter

Add a Vapi assistant to your Flutter app.

Vapi React Native

Add a Vapi assistant to your React Native app.

Vapi Python

Multi-platform. Mac, Windows, and Linux.