Speech to Text

A Speech service feature that accurately converts spoken audio to text

Convert speech to text

Quickly and accurately transcribe audio to text in more than 85 languages and variants. Customize models to enhance accuracy for domain-specific terminology. Get more value from spoken audio by enabling search or analytics on transcribed text or facilitating action—all in your preferred programming language.

High-quality transcription

Get accurate speech to text transcriptions with state-of-the-art speech to text software.

Customizable models

Add specific words to your base vocabulary or build your own speech models.

Flexible deployment

Run Speech to Text anywhere—in the cloud or at the edge in containers.

Production ready

Access the same robust technology that powers speech recognition across Microsoft products.

Try Speech to Text with this demo app, built on our JavaScript SDK

To try out the demo with your own voice using a microphone, please change to a different browser with WebRTC support, for example a recent version of Microsoft Edge, Firefox or Chrome.

Your speech data will not be stored

Transcribe speech to text accurately from various sources

Convert audio to text from a range of sources, including microphones, audio files, and blob storage. Use speaker diarization to determine who said what when. Get readable transcripts with automatic formatting and punctuation.

Customize speech models to your needs

Tailor your speech models to understand organization-specific and industry-specific terminology. Overcome speech recognition barriers such as background noise, accents, or unique vocabulary. Customize your speech recognition models by uploading audio data and transcripts. Automatically generate custom models using Office 365 data to optimize speech recognition accuracy for your organization.

Deploy anywhere, from the cloud to the edge

Run Speech to Text wherever your data resides. Build speech to text apps that are optimized for both robust cloud capabilities and edge locality using containers and language detection (preview). Speech containers support both standard and custom speech to text.

Comprehensive privacy and security

  • The Speech service, part of Azure Cognitive Services, is certified by SOC, FedRAMP, PCI DSS, HIPAA, HITECH, and ISO.
  • Your data remains yours. Your audio input and transcription data aren't logged during audio to text processing.
  • View and delete your custom speech data and models at any time. Your data is encrypted while it’s in storage.
  • Backed by Azure infrastructure, the Speech service offers enterprise-grade security, availability, compliance, and manageability.

Flexible pricing gives you the power and control you need

Pay only for what you use, with no upfront costs. With Speech to Text, you pay as you go based on the number of hours of audio you transcribe.

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 to text software with Speech Studio. No code required.

Built with Speech to Text

KPMG streamlines call transcription

KPMG uses Speech to Text to transcribe and catalog thousands of hours of calls, reducing compliance costs for its clients by as much as 80 percent.


Motorola helps first responders access vital data using voice

Motorola Solutions is helping police officers and other emergency first responders gain faster access to important information with a voice-powered virtual assistant.

Motorola Solutions

Universal Electronics delivers voice-enabled smart home experiences

Universal Electronics is helping brands deliver voice-enabled navigation and control capabilities that work across everyday devices found in the home—offering a truly unique consumer experience.

Universal Electronics

Hochtief documents construction defects using voice

Hochtief is helping project managers identify and document construction defects at project sites with a voice-enabled virtual assistant.

Cheetah Mobile

NTT DATA accelerates decision-making with meeting insights

NTT DATA is unlocking insights from speech data with real-time meeting transcription. With Custom Speech, they are able to customize speech recognition models to understand organization-specific terms.


Insight powers conversational banking experiences

Insight Enterprises is helping banks bring digital speed and convenience to their branches with a conversational-AI powered banking solution. Speech to Text converts what customers say into data that can be processed and analyzed so that customers can get timely, relevant responses.

Insight Enterprise, Inc.

Get started with Speech