Introduction

Vapi is the Voice AI platform for developers.

Vapi lets developers build, test, & deploy voice AI agents in minutes rather than months — solving for the foundational challenges voice AI applications face:

Simulating the Flow of Natural Human Conversation

Turn-taking, interruption handling, backchanneling, and more.

Realtime/Low Latency Demands

Responsive conversation demands low latency. Internationally. (<500-800ms voice-to-voice).

Taking Actions (Function Calling)

Taking actions during conversation, getting data to your services for custom actions.

Extracting Conversation Data

Review conversation audio, transcripts, & metadata.

Implemented from scratch, this functionality can take months to build, and large, continuous, resources to maintain & improve.

Vapi abstracts away these complexities, allowing developers to focus on the core of their voice AI application’s business logic. Shipping in days, not months.

Quickstart Guides

Get up & running in minutes with one of our quickstart guides:

No Code

Dashboard Quickstart

The easiest way to start with Vapi. Run a voice agent in minutes.

Inbound Calling

Quickly get started handling inbound phone calls.

Outbound Calling

Quickly get started sending outbound phone calls.

Platform-Specific

Quickly get started making web calls. Web developers, this is for you.

Examples

Explore end-to-end examples for some common voice workflows:

We’ll build an outbound sales agent that can schedule appointments.

Inbound Support

We’ll build an technical support assistant that remembers where we left off.

We’ll build an order taking agent for our pizza website.

Key Concepts

Gain a deep understanding of key concepts in Vapi, as well as how Vapi works:

Core Concepts

Assistants set the foundation for applications built on Vapi.

Server URLs allow Vapi to deliver your application data in realtime.

Learn the ins-and-outs of telephony & conducting phone calls on Vapi.

Learn about privacy concepts like HIPAA & data privacy on Vapi.

Platform

Learn what goes on behind-the-scenes to make Vapi work.

Explore Our SDKs

Our SDKs are open source, and available on our GitHub:

Add a Vapi assistant to your web application.

Add a Vapi assistant to your iOS app.

Add a Vapi assistant to your Flutter app.

Vapi React Native

Add a Vapi assistant to your React Native app.

Multi-platform. Mac, Windows, and Linux.

FAQ

Common questions asked by other users:

Is Vapi right for my usecase?

Sounds good, but I’m building a custom X for Y...

Couldn’t I build this myself and save money?

Is it going to be hard to set up?

How is Vapi different from other Voice AI services?

Get Support

Join our Discord to connect with other developers & connect with our team:

Join Our Discord

Connect with our team & other developers using Vapi.

Send our support team an email.