Azure Voice Live APIMicrosoft
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MAI-Voice-2.1Microsoft
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Related Products
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About
Azure Voice Live API is a fully managed solution for building low-latency, high-quality speech-to-speech agents through one unified interface. It combines speech recognition, generative AI, and text-to-speech, allowing developers to send audio input and receive audio output, synchronized avatar visuals, and action triggers without manually orchestrating separate backend components or deploying the underlying models. It supports more than 140 speech-to-text locales and over 600 standard voices across 150+ text-to-speech locales, with options for phrase lists, custom speech, custom voices, and brand-aligned avatars. Developers can choose among multiple generative AI models, including GPT-Realtime, GPT-5, GPT-4.1, GPT-4o, Phi, and compatible bring-your-own models, depending on the intelligence, speed, and latency required. Advanced conversational features include noise suppression, echo cancellation, robust interruption detection, and end-of-turn detection.
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About
MAI-Voice-2.1 is Microsoft's hosted text-to-speech model for developers building voice-enabled products. It generates expressive speech from text, supports multilingual output across 23 languages, and offers emotion and style controls, long-form speaker consistency, and gated matching to consented reference voices. Developers access it through Microsoft Foundry and Azure Speech APIs and SDKs for narration, audiobooks, voice assistants, and customer-service experiences.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Developers seeking to build low-latency conversational voice agents with real-time speech recognition, synthesis, and bidirectional interaction
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Audience
Developers and organizations building multilingual speech-enabled products, including narration and audiobook services, voice assistants, and customer-service or call-center experiences.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
$22/1M characters
Usage-based at $22 per 1 million characters of generated speech.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationMicrosoft
Founded: 1975
United States
learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live
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Company InformationMicrosoft
Founded: 1975
United States
microsoft.ai/models/mai-voice-2-1/
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Azure AI Speech
Not Supported
GPT-4.1
Supported
GPT-4o
Supported
GPT-5
Supported
MAI-Voice-2-Flash
Supported
Microsoft Azure
Supported
Phi-4
Supported
gpt-realtime
Supported
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Integrations
Azure AI Speech
Supported
GPT-4.1
Not Supported
GPT-4o
Not Supported
GPT-5
Not Supported
MAI-Voice-2-Flash
Not Supported
Microsoft Azure
Not Supported
Phi-4
Not Supported
gpt-realtime
Not Supported
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