Calling APIs

Start meaningful conversations with voice and video calling

Nothing beats real-time communication when it comes to building relationships with customers. Whether you need voice or video capabilities, we’ve got you covered!

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Join over 150,000 businesses, including 8 of the 10 largest tech companies in the world.

Seamless conversations customers will love

Personalized, meaningful relationships

Build loyalty with crystal clear audio and low latency for a secure voice experience that sets brands apart.

Engage customers locally and globally

Reach customers on any platform and channel, whether they’re on an app, web browser, mobile, or landline.

Find new synergies and cut costs

Optimize your business, reduce costs, and add flexibility by automating and moving communications to the cloud.
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Build trust and boost engagement with real-time communication

Voice API

Design the exact voice call flow you need with flexible and scalable solutions.
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In-App Voice Calling

Use our in-app voice calling SDK to build trust and deeper relationships with your customers.
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In-App Video Calling

Build a seamless, customizable in-app video experience into your mobile and web app.
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Number Masking

Masking numbers to anonymize voice calls can protect you and your customers while keeping personal numbers safe.
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STIR/SHAKEN

Fight back against robocalls, increase call answer rates, and build consumers’ trust.
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Phone Call Verification

Global call verification for mobile and landline numbers – Verify any user, anywhere!
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Image for Want more? Bring your application security to the next level with our Verification API

Want more? Bring your application security to the next level with our Verification API

Protect your business, enhance customer experience, and boost conversion rates through simple, secure sign-ups and logins.

Use our APIs to set up smart, scalable phone number verification, and authenticate users on any device, across platforms and in multiple languages, wherever they are. 

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Why choose Sinch for voice and video calling

We make sure you always get the best call quality at the best possible price. How do we do this? Well, having extensive experience of voice calling technology and a robust network of local operators certainly helps.

Create your own mix of PSTN, VoIP, and SIP to reach customers on any platform, via an app, their phone, or through SIP.

Here at Sinch, we never compromise on data protection! We build our solutions and manage user data with privacy laws in mind. We are GDPR compliant and ISO 27001 certified.

We help you make smarter business decisions! Our customer portal allows you to monitor call characteristics and usage patterns in real time and create customized reports to better understand customer needs.

Deeper insights into Calling products

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Products, Solutions

Enhance customer experiences with Voice IVR

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Image for How organizations are using mobile messaging, voice, and video for crisis management
Insights, Products, Solutions

How organizations are using mobile messaging, voice, and video for crisis management

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Insights, Products, Solutions

12 standout ways to improve customer experience

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What are you waiting for?

Add voice and video chat features to your platform now!