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Azure AI Speech

Energize your apps with prebuilt, customizable, multilingual speech AI models.

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OVERVIEW

Discover the latest Azure AI Speech capabilities

Build voice-enabled, multilingual generative AI apps with fast transcriptions and natural-sounding voices.

Explore Azure AI Speech
Enable AI agents with end-to-end speech, including customized transcription, voice, and avatars.

Explore Voice Live API
Enable real-time, multi-language speech-to-speech translation and speech-to-text transcription of audio streams.

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Run AI models wherever your data resides. Deploy your apps in the cloud or at the edge with containers.

Develop with containers

USE CASES

Develop generative AI apps with speech models

Build voice-enabled agents

Use foundation models along with customized audio-in and audio-out models to power agents with voice.

Transcribe speech to text

Transcribe call center or meeting conversations. Go global with audio captioning in more than 100 languages.

Convert text to speech

Build bots that speak naturally. Differentiate your brand with customized, realistic voices and speaking styles.

Use post-call analytics

Analyze audio or video call recordings to gain deep insights using foundation models in Azure AI Content Understanding.

Transcribe audio with OpenAI Whisper

Transform your call centers using the latest OpenAI Whisper model in Azure AI Speech or Azure OpenAI.

Build custom voices

Build natural-sounding voices with custom neural voice.

Build your avatars

Bring your brand to life using pre-built or custom avatars with natural-sounding voices.

Enable multilingual communication

Translate audio or video data from and into an ever-growing list of supported languages. Customize translations to your industry.

Embed speech

Use embedded speech to power on-device speech-to-text and text-to-speech scenarios where cloud connectivity is intermittent or unavailable.

Security

Embedded security and compliance

34,000

Full-time equivalent engineers dedicated to security initiatives at Microsoft.

15,000

Partners with specialized security expertise.

>100

Compliance certifications, including over 50 specific to global regions and countries.

Learn more about security on Azure

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PRICING

Flexible pricing to meet your needs

Pay for only what you use—no upfront costs. Azure AI Speech pay-as-you-go pricing is based on:

The number of hours of audio you transcribe or translate for speech to text and speech translation.
The number of characters you convert to audio for text to speech.
The number of transactions for speaker recognition.

Azure AI Speech pricing

Azure OpenAI in Foundry Models

Incorporate multimodality and enhance apps with models that combine multiple types of data, such as text, images, video, and audio.

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Azure AI Foundry

Get everything you need to develop generative AI applications and custom copilots on one platform.

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Azure AI Content Safety

Deliver secure and trustworthy solutions with built-in tools that put responsible AI principles into practice.

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Azure AI Content Understanding

Accelerate the transformation of multimodal data into insights.

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CUSTOMER STORIES

See what customers are building with Azure AI Speech

View all Azure AI stories

Two women, one in a hijab, closely observe a computer screen while a man speaks on a phone in the blurred background.

“Our biggest use case for Azure is in the AI, Cognitive Services, and speech areas. It touches almost every single part of our platform.”

Jeff Gallino, Cofounder and Chief Technology Officer, CallMiner

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“We were pioneers here in Brazil. We made a courageous choice investing in the use of a neural, synthesized voice when no one else was doing it. We talk to millions of customers each year, so changing our voice is an act of courage.”

Olimpio Fernandes, Director of Cognitive Experience Center, TIM

“It’s quite difficult to offer high-quality voices at scale, but Microsoft has really helped us get the ball rolling on the TTS end and get the voices out to our customers.”

Moad Ben-Suleiman, Software Engineer, NaturalReader

RESOURCES

Get started with Azure AI Speech

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Explore Azure AI Speech documentation

Discover resources such as tutorials and API references.

Learn more

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Build voice-enabled apps

Design and build enterprise-grade, voice-enabled apps.

Download the infographic

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GitHub resources

Explore sample code and SDKs.

Browse samples on GitHub

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Start building now

Build models quickly in Azure AI Speech Studio.

Explore Speech Studio

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Azure AI Speech learning paths

Develop natural language processing solutions with Azure AI Services.

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Create agentic AI

Integrate AI agents into apps seamlessly and learn advanced model fine-tuning techniques.

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Find the best AI model

Enable multimodal models, model selection, and benchmarking, and create multimodal applications.

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Secure and responsible AI

Understand the fundamentals of AI security, evaluations, and managing harmful content.

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FAQ

Frequently asked questions

Azure AI Speech offers a number of features and capabilities, including speech to text, text to speech, and speech translation. These are offered through SDKs in several programming languages, including C#, C++, Java, and more.

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Yes, Azure AI Speech supports OpenAI’s Whisper model, especially for batch transcriptions.

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Speech supports an ever-growing set of languages. For supported languages, please refer to the current list.
Customers are building interesting applications using Azure AI services. Get started with Azure AI Speech analytics in Azure AI Foundry for use cases including conversational AI, post-call analytics, and video summarization.