Voice API

Lead the conversation and deliver a better customer experience with the Vonage programmable Voice API. Personalize 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.
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Limited Time Offer!

Vonage is now making it even easier to implement Voice Recognition technology!

Automatic Speech Recognition (ASR) from Vonage enables you to introduce voice bot technology quickly and with ease—and in more than 120 languages—offering both self-service engagement and organizational effectiveness.

If you choose Vonage to enhance your voice experiences with speech recognition, ASR is included at no extra charge from 1-July-2021 until 30-September-2021, subject to terms and conditions*


*Automatic Speech Recognition promotion terms and conditions below:

  • Credit applies to new and existing Vonage customers

  • Not to be combined with any other promotional offer or discounts
  • Offer applies to up to 300,000 ASR calls per month

  • Requires Voice API (existing or new implementation)
  • No charge period is 1-July-2021 through 30-September-2021; customers who are activated during this period will not be charged from implementation date through 30-September-2021



See how our Voice API helps businesses like yours succeed.

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Turn phone calls into a marketing machine

Record and capture important data to measure and improve your lead marketing efforts.
  • Track insights and metadata such as who called, dialed number, call length, and more
  • Increase leads and improve lead quality by advertising virtual phone numbers in addition to web forms and email
  • Route calls to the right agent the first time based on select tracking criteria
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Put callers in control

Add a simple interactive voice response script with just a few lines of code.
  • Integrate self-service to provide a faster experience and allow agents to address higher-value inquiries
  • Capture call event data and voice recordings to gain new insights
  • Keep it local and improve customer engagement by advertising local or toll-free numbers
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Get through when it matters

Deliver critical, global alerts through phone calls.
  • Grow your business with viral adoption
  • Increase the chances of your alert being heard through persistent phone calls
  • Sync with a simple IVR application to acknowledge receipt
  • Deliver alerts to backup contacts if no acknowledgment is detected
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Keep it confidential

Protect customer identities on voice calls to improve privacy and avoid off-platform transactions.
  • Protect users’ privacy by connecting them without revealing phone numbers
  • Track, record, and analyze calls to gain new insights
  • Keep transactions where they belong—on your platform
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Secure voice payment solution

Payments over the phone

Process payments over the phone with our PCI-DSS compliant solution. Easily integrate secure payment processing with your IVR to charge your customers during phone calls.

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Integrate with third-party vendors in real time, including artificial intelligence bots. Learn more
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Voice Quality Engine

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

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

See how businesses like yours are using Vonage APIs today.

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Winners standing on the podium GLOBAL RESEARCH STUDY
Going for CX Gold with Multichannel Communications
Does your business have what it takes to deliver a winning customer experience? We asked 5,000 consumers across the globe to rank their favorite communication channels. Find out what they told us in our latest global report.

Try it free

Start developing now with free credit. No credit card required.
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Speak with an expert.

US toll-free number: 1-844-365-9460
Outside the US: local numbers