CALLS THAT SOUND HUMAN

From text to speech to automated, natural phone calls

Make written text or SSML sound like lifelike speech for automated notifications, reminders, and IVR prompts in over 115 languages using Sinch’s Voice API.

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

EASY TO USE TTS

Automate, personalize, and scale voice messages with ease

With Sinch text to speech for phone calls, you can deliver real-time, natural-sounding automated calls that save agent time, provide consistent brand voice, and reach customers around the world.

Automate communication

Send routine notifications, alerts, and reminders without involving agents, letting your staff focus on complex customer needs.

Personalize at scale

Create unique voice messages for each user instantly, keeping communications personal without manual recording or editing.

Enhance accessibility

Provide audible information for visually impaired users or hands-free scenarios, making every customer interaction accessible.
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HUMAN TOUCH, SCALED

Scale personalized communications without limits

Transform outreach with dynamic, individualized, automatically generated voice calls. Cut down on repetitive agent tasks and scale outbound notifications while keeping a human tone.

  • Unique messages for every recipient

  • Reduce agent handle time

  • Use a consistent brand voice 

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RESPOND DAY OR NIGHT

Deliver 24/7 automated customer service

Give your customers round-the-clock speech synthesis to answer common questions, guide callers through IVR menus, and deliver time-critical alerts — even when your team is offline.

  • Always-on availability

  • IVR menu guidance

  • Instant service alerts

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CONNECT THE WORLD

Reach global audiences in their language

Connect with customers worldwide using a broad selection of voices and accents across 115+ languages. Every caller hears a clear, natural-sounding message.

  • 115+ languages and locales

  • Multiple voices and accents

  • High-quality synthesis engines

HEAR IT IN ACTION

Where text to speech for phone calls excels

IVR menu prompts

Create intuitive, spoken menus that route callers efficiently, improving customer experience and reducing wait times.

Automated alerts

Instantly call customers about outages, fraud warnings, or critical events, delivering important information in real time.

Appointment reminders

Reduce no-shows by sending scheduled voice calls that confirm bookings, deliveries, or service visits with personalized details.

One-time passcodes

Read OTPs or transaction details aloud for secure authentication when users can’t access SMS or email.

ALL THE ESSENTIALS

Everything you need, ready when you are

Extensive language support

Speak to customers in 115+ languages and locales for global reach.

SSML fine-tuning

Control pauses, emphasis, and pitch to craft the ideal listening experience. 


High-quality voice

Use leading synthesis engines for clear, natural-sounding output. 


Direct API integration

Integrate TTS into any call flow — App-to-Phone, PSTN, or IVR — using the Voice API.

Real-time synthesis 

Generate and play audio instantly so callers never wait for information. 


Deep IVR integration

Combine with IVR features to build complex, automated voice workflows. 

Usage-based pricing 

TTS costs are included in the per-minute rates of the Sinch Voice API.


Enterprise-grade security

Inherits ISO 27001 and GDPR compliance from the Sinch Voice API. 


Text to speech for phone calls FAQs

A call is initiated via the Sinch Voice API. Then, your SVAML script sends text or SSML using the say command. Sinch synthesizes the audio in real time and plays it to the recipient.

Sinch TTS service supports over 115 languages and locales, offering a wide range of voices and accents. 

Yes. SSML support lets you adjust pauses, emphasis, pitch, and pronunciation for full control over pacing and tone. 

You need access to the Sinch Voice API. Text to speech is a core feature and can be combined with IVR for automated workflows. 

Talk to an expert about text-to-speech

We’ll help you explore how to reach customers in their language, personalize at scale, and provide 24/7 service.