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Speech translation

Easily integrate real-time speech translation to your app.

Enable multilingual communication

Translate audio from more than 30 languages and customize your translations for your organization’s specific terms—all in your preferred programming language.

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Benefit from fast, reliable speech translation powered by neural machine translation technology.

Customizable translations

Tailor models to recognize domain-specific terminology and unique speaking styles.

Normalized text

Deliver readable translations with an engine trained to normalize speech output.

Built-in security

Your data stays yours—your speech input is not logged during processing.

Add high-quality translations to your apps

Generate speech-to-speech and speech-to-text translations with a single API call. Speech Translation captures the context of full sentences to provide accurate, fluent translations and improve communication between speakers of different languages.

Tailor translations to reflect domain-specific terminology

Customize speech recognition and translation for terminology specific to your business or industry. Train and deploy a custom translation system—without requiring machine learning expertise.

Normalize text for better translations

Speech Translation can remove verbal fillers ("um," "uh," and coughs) and repeated words, add proper punctuation and capitalization, and exclude profanities for more readable translations.


Fuel App Innovation with Cloud AI Services

Learn 5 key ways your organization can get started with AI to realize value quickly.

Privacy and security

The Speech service, part of Azure AI Services, is certified by SOC, FedRamp, PCI, HIPAA, HITECH, and ISO.

View or delete any of your custom translator data and models at any time. Your data is encrypted while it’s in storage.

You control your data. Your audio input and translation data are not logged during audio processing.

Backed by Azure infrastructure, the Speech service offers enterprise-grade security, availability, compliance, and manageability.

Comprehensive security and compliance, built in

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Get started with an Azure free account


Start free. Get $200 credit to use within 30 days. While you have your credit, get free amounts of many of our most popular services, plus free amounts of 55+ other services that are always free.


After your credit, move to pay as you go to keep building with the same free services. Pay only if you use more than your free monthly amounts.


After 12 months, you'll keep getting 55+ always-free services—and still pay only for what you use beyond your free monthly amounts.

Documentation and resources

Get started

Read our documentation.

Take the Microsoft Learn course.

Explore code samples

Check out our sample code.

See customization resources

Customize your speech solution with

 Speech Studio. No code required.

Start building with AI Services

Try Speech translation free