Azure Voice Live APIMicrosoft
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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
Naturaltts is a text-to-speech platform designed for universities, education teams, researchers, and accessibility-focused workflows. It helps organizations convert text, PDFs, and DOCX files into clear, natural-sounding audio in a structured environment built for academic and professional use.
Unlike generic text-to-speech tools built mainly for individual listening, Naturaltts is designed around how education teams actually evaluate and adopt software. The platform supports real document-to-audio workflows, multilingual listening, shared team evaluation, and clearer admin visibility during pilots and rollout.
Naturaltts is especially well suited for:
universities and colleges
accessibility and disability support teams
teaching and learning departments
academic operations teams
researchers and multilingual academic workflows
Key capabilities
Convert text into speech quickly
Upload and process PDF and DOCX files
Select language and matching voices
Generate clear audio
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Public-sector service teams that need multilingual voice agents to answer questions and complete citizen-facing tasks in real time
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Audience
Universities, education teams, researchers, and accessibility-focused organizations looking for a structured text-to-speech platform for document-based workflows
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
No information available.
Free Version
Free Trial
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Pricing
No information available.
Naturaltts offers a Free Trial for individual evaluation and an EDU Trial for verified schools and universities.
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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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 InformationNaturaltts
Founded: 2019
Ukraine
naturaltts.org
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Alternatives |
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Categories |
Categories |
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Text to Speech Features
Adjust Speaking Rate / Pitch
API
Audio Optimization
Custom Lexicons
Different Voice Choices
Multi-Language Support
Synchronize Speech
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Integrations
GPT-4.1
GPT-4o
GPT-5
MAI-Voice-2-Flash
Microsoft Azure
Phi-4
gpt-realtime
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Integrations
GPT-4.1
GPT-4o
GPT-5
MAI-Voice-2-Flash
Microsoft Azure
Phi-4
gpt-realtime
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