## Our Voice API, your rules

Build a voice experience that you can quickly scale. Then modify it with a range of resources, like our Voice SDK, and unlock new insights from your conversations with [Conversational Intelligence](https://www.twilio.com/en-us/voice/intelligence).

Add features like [Interactive Voice Response (IVR)](https://www.twilio.com/en-us/use-cases/ivr), voice recording, and speech recognition. And get connectivity you can trust through reliable, high-quality connections with the Twilio Super Network.

[Explore docs](https://www.twilio.com/docs/voice)

## Twilio positioned as a Leader in the 2025 Gartner® Magic Quadrant™ for CPaaS*

[Read the 2025 report](https://www.twilio.com/en-us/report/gartner-mq-cpaas-2025)

## A Voice API that works everywhere you need it

Create stronger connections through any voice calling experience.

### Interactive Voice Response (IVR)

Increase customer engagement and reduce operation costs with a scalable IVR system that can respond to commands, build text-to-speech experiences in hundreds of languages, and more.

[Learn about IVR](https://www.twilio.com/en-us/use-cases/ivr)

Marks & Spencer built an AI-powered IVR with Twilio to route customers to the right person with greater accuracy, in less time.

### Alerts and notifications

Customize the way you notify your customers based on their channel preferences for password resets, low balance alerts, bill reminders, fraud warnings, and more.

[Learn about alerts](https://www.twilio.com/en-us/use-cases/alerts-and-notifications)

### Call tracking

[Learn about call tracking](https://www.twilio.com/en-us/use-cases/call-tracking)

### Embedded calling

Use Voice SDKs to quickly build scalable, WebRTC-powered voice applications with uniform performance across all browsers and devices.

[Learn about voice SDKs](https://www.twilio.com/en-us/webrtc)

### Global conferencing

Add multi-party calling experiences, global dial-in support, and support for up to 250 participants with included PCI and HIPAA compliance for your customers’ privacy.

[Learn about global conferencing](https://www.twilio.com/en-us/voice/conference)

## Voice API Features

The Voice API that just works—and features that make it work even harder.

### Unlock ROI from your customer calls with Conversational Intelligence

Turn conversations into knowledge and extract customer data at scale with natural language intelligence. Conversational Intelligence is your gateway to AI-powered business transformation.

[Learn more about Conversational Intelligence](https://www.twilio.com/en-us/products/conversational-ai)

### Good conversations start with great code

Make your first outgoing phone call with just a few lines of code. Add a few more and your app can respond to incoming callers. Then choose your programming language for a quick and confident deployment.

- **[Voice quickstart guide](https://www.twilio.com/docs/voice#get-started)**
- **[API overview](https://www.twilio.com/en-us/voice/api)**
- **[SDKs](https://www.twilio.com/docs/voice/sdks)**

### Need help building? No problem.

Work with one of our trusted partners to get coding support or explore a pre-built voice solution. [Find a partner](https://www.twilio.com/en-us/partners)

## FAQ

### What is a voice API?

A voice API is a tool that enables your web application to make and receive phone calls. It can immediately connect you to the Public Switched Telephone Network (PSTN) so you can call people anywhere in the world, on any device, through any network via an internet connection. It can also place calls over the internet, through VoIP calling, to reach applications connected to the internet.

### What is a voice calling app?

A voice calling app is an application that can make and receive phone calls. It can connect you to the Public Switched Telephony Network (PSTN) and VoIP applications so you can reach people anywhere, on any device.

### What are common use cases for Twilio Voice API?

- [Alerts and notifications](https://www.twilio.com/en-us/use-cases/alerts-and-notifications) 
- [IVR](https://www.twilio.com/en-us/solutions/ivr) 
- [Call tracking](https://www.twilio.com/en-us/use-cases/call-tracking) 
- [Embedded calling](https://www.twilio.com/en-us/webrtc) 
- [Global conferencing](https://www.twilio.com/en-us/voice/conference) 
- [Masked calling](https://www.twilio.com/docs/glossary/what-is-masked-calling)

### Can Twilio encrypt calls with the Voice API?

Yes. As a default security measure, Twilio Voice uses encryption at rest for call recordings stored with Twilio.

### How does Twilio Voice API pricing work?

Twilio Voice is pay as you go, which means you pay per call and duration. There are different charges depending on the type of call you’re making, the number you’re calling, and the features you’re using.