Voice API

It's not just about making phone calls.

Lead the conversation and deliver a better customer experience with the Vonage programmable Voice API. Personalise the WebRTC and PSTN calling experience with user context and data at your fingertips. Innovate, streamline and scale with flexible voice capabilities – all on a reliable, high-quality global carrier network billed on a per-second basis so you pay only for what you use.

Try it free

See how our Voice API helps businesses like yours succeed.

image that depicts the Vonage Contact Center and its language support for Salesforce Service Cloud Voice

AI Enablement

Our Programmable Voice API enables the creation of automated and personalised customer interactions with AI

From voice bots to customised conversational AI and analytics, Vonage has you covered with tools, guides and seamless integrations to differentiate your customer experiences while optimising workflows.

Add voice control and enable easy-to-use self-service in more than 120 languages with Automatic Speech Recognition.
Easily integrate with third-party vendors in real time, including artifical intelligence bots.
AI Studio is a low-code conversation design tool that empowers developers and non-developers alike to create and deploy customer engagement experiences that operate in natural language. AI Studio is available as a Vonage-designed and -deployed managed solution.

Branded Calling

Engage your customers with the ease, convenience and security of embedded voice calling, straight from your apps and website.

Promote trusted relationships by showcasing company name, logo and call reason directly on the recipient's lock screen to enhance brand visibility.
Authenticate customers through app sign-in to simplify the connection.
Augment and complement robotic IVRs with direct click-to-call to the right department or your contact centre.

See Branded Calling

Your customers are ready for AI

The Vonage Global Customer Engagement Report 2024 showed that 80% of global consumers have used AI tools recently, and the majority are happy to do so, as long as they get the results they want.

Voice API is the ideal fix to some of the most common pain points:

63% are frustrated with long wait times to speak to someone. Our responsive Voice API, combined with Vonage AI Studio's proprietary NLU engine, means customers can get the answers they need without waiting on hold.
59% don’t like businesses who have no way to contact them via voice/phone. Vonage Voice API can provide 24/7 service, and if the caller does need to speak to a live agent, the combination of sentiment analysis and NLU means they can be routed through or have a callback scheduled as needed.
54% can’t access customer service in their preferred language. With support for 120 languages, from Afrikaans to Zulu, our Vonage Voice API can ensure there’s always a way to communicate, even if you don’t have any staff that speak the language.

Illustration of a globe with people figures and chat bubbles

Flexible experiences

Extend, customise and differentiate your customer experiences with Voice Call API

Our Voice API enables an interconnected suite of solutions that extends IP Voice and PSTN calling experiences on a global scale and in multiple languages.

Deliver seamless communications with Programmable SIP. Bring Vonage Voice API functionality, such as multichannel recording, IVR, Text to Speech, WebSocket connectivity for AI integrations, and the power of contextual conversations to your platform.
Power intelligent customer experiences through fully automated support or as an integrated front end to your Contact Centre that addresses simple requests or issues with the option to escalate to live agents.

Voice Connectors

Connect to partners in the Vonage network … or enjoy real-time access to third-party vendors via the WebSockets protocol. Learn more

Voice Quality Engine

Deliver high-quality voice experiences through the low latency, feature-rich, carrier-grade Vonage network. Learn more

WebRTC Enabled

Conduct calls over IP and PSTN with powerful programmable voice features to improve business outcomes and user experiences.

Automatic Speech Recognition

Add voice control and enable easy-to-use self-service with Automatic Speech Recognition in 120 languages. Learn more

Text-to-Speech

You can convert text to natural-sounding language in a range of languages and voices, improving your automatic menus and voice-based alerts. Learn more

Vonage AI Services - Voice Bot Package

Need help? Vonage AI Experts and the AI engine can help you set up a capable Voice Bot option. Learn more

See all features

Illustration of a robot floating above a computer chip marked AI. The robot is wearing a phone headset. Circling around its head are several purple horizontal bars.

No tech knowledge needed to use Vonage API for Voice

If you’re already using AI solutions in your business, then Voice API is designed to integrate with your existing tech stack and add to it. Our comprehensive voice API documentation makes it easy to customise and make it work for you.

But, if you’re not there yet – and you don’t have the know-how in your team – Vonage can help. Our AI solutions can be deployed in three ways: self-serve, self-serve with professional services and fully managed.

With the fully managed option, we take care of the design, deployment and maintenance, meaning you get the combined benefits of Voice API with AI Studio's conversational AI without the setup. In fact, with our AI Virtual Assistant Service Pack, you’ll have access to the ultimate AI virtual assistant, with vocal and visual monitoring, as well as a hands-on Vonage team that can retrain and optimise the assistant as needed.