Voice

It’s your Call

The Nexmo Voice API is the easiest way to build high-quality voice applications in the Cloud.

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Test drive the code

Dial the following number to see the code in action: +1 415 548 4004

[ 
  { 
    action: "talk" 
    text: "Hello and welcome to the Nexmo Voice API" 
  } 
]
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Documentation

See how easy it is to build high-quality voice applications with the web technologies and frameworks you’re already using .

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Loud and clear

  • Built for the modern Web

    With our powerful Voice API you can build apps that scale easily with the web technologies that you are already using

  • Low latency, high quality

    Latency can make or break voice services. So we use only the highest quality routes and Tier 1 carriers with most major codecs supported

  • More numbers in more countries

    We have more Voice and Toll-Free numbers in more destinations than any other provider – and that includes traditionally difficult to access countries

Powerful Call Control

Control the flow of your calls with a powerful set of call control features allowing complex voice use cases.

Call Recording

Record and store inbound or outbound (software-initiated) calls. Split-recording and dynamic contextual recording coming soon.

Voice Conferencing

Create a conference in one line of code. As simple as you want or with powerful enterprise features.

Speak your Customers’ Language

We offer a text to speech engine in over 23 languages in different genders and accents.

Inbound Call Processing

Manage inbound calls in developer-friendly JSON with Nexmo Call Control Objects.

Voice Proxy

Protect your customers’ identities by masking their phone numbers with a voice proxy solution.

Voice Menus

Create interactive voice response (IVR) menus on the fly and integrate them easily into your application.

True Per-Second Billing

Only get charged for what you use, down to the second, with no long-term contracts.

Telco Features

Get all the features of a telco, such as: dynamic CLI, DTMF support and a wide range of codecs.

Access real-time Data

Monitor costs and other analytics in real time through our online dashboard.

SIP Trunking

We keep latency to a minimum using our simple SIP trunks with geographical routing.

Pricing

Only pay for what you use, nothing more.

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    Taxi hailing service, Gett, is growing rapidly and has turned to Nexmo’s SMS API to reliably simplify the complexities of global expansion.

    Online marketplace, Alibaba, relies on our SMS services to enhance security and give customers added peace of mind, as well as keeping them up to date with the latest perks and offers.

    Thomson Reuters has a reputation for being up to the minute. So when they needed to reliably reach users across 30 countries about latest product features and updates, they turned to Nexmo’s SMS API.

    Grab, the leading ride-hailing platform in Southeast Asia, relies on the Nexmo Voice API to communicate with customers in several countries.

    Taxi hailing service, Gett, is growing rapidly and has turned to Nexmo’s SMS API to reliably simplify the complexities of global expansion.

    Online marketplace, Alibaba, relies on our SMS services to enhance security and give customers added peace of mind, as well as keeping them up to date with the latest perks and offers.

    Thomson Reuters has a reputation for being up to the minute. So when they needed to reliably reach users across 30 countries about latest product features and updates, they turned to Nexmo’s SMS API.

    Grab, the leading ride-hailing platform in Southeast Asia, relies on the Nexmo Voice API to communicate with customers in several countries.