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ease
features
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support

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Description

The Azure Voice Live API offers a comprehensive, managed platform for creating high-quality, low-latency speech-to-speech agents, all through a single, unified interface. By integrating speech recognition, generative AI, and text-to-speech capabilities, it enables developers to effortlessly send audio inputs and receive synchronized audio outputs, along with avatar visuals and action triggers, while eliminating the need for separate backend orchestration or model deployment. This robust solution supports over 140 speech-to-text languages and features more than 600 standard voices across 150+ text-to-speech languages, providing options for custom speech, phrase lists, unique voices, and avatars that align with brand identities. Developers have the flexibility to select from various generative AI models, such as GPT-Realtime, GPT-5, GPT-4.1, GPT-4o, Phi, and other compatible bring-your-own models, tailored to meet specific needs for intelligence, speed, and latency. The API also incorporates advanced conversational features like noise suppression, echo cancellation, effective interruption detection, and end-of-turn detection, enhancing the overall user experience and ensuring smoother interactions. With these capabilities, developers can create more engaging and lifelike conversational agents that cater to diverse applications.

Description

Naturaltts is a text-to-speech platform for universities, education teams, researchers, and accessibility-focused workflows. It enables organizations to convert text, PDFs, and DOCX files into clear audio through a structured, team-friendly environment built for academic and professional use. With multilingual support, shared workspaces, admin visibility, guided EDU evaluation, and in-dashboard support, Naturaltts helps institutions test and adopt text-to-speech more effectively for accessibility, research, and document-to-audio workflows.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

GPT-4.1
GPT-4o
GPT-5
MAI-Voice-2-Flash
Microsoft Azure
Phi-4
gpt-realtime

Integrations

GPT-4.1
GPT-4o
GPT-5
MAI-Voice-2-Flash
Microsoft Azure
Phi-4
gpt-realtime

Pricing Details

No price information available.
Free Trial
Free Version

Pricing Details

No price information available.
Naturaltts offers a Free Trial for individual evaluation and an EDU Trial for verified schools and universities.
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

Microsoft

Founded

1975

Country

United States

Website

learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live

Vendor Details

Company Name

Naturaltts

Founded

2019

Country

Ukraine

Website

naturaltts.org

Product Features

Text to Speech

API
Adjust Speaking Rate / Pitch
Audio Optimization
Custom Lexicons
Different Voice Choices
Multi-Language Support
Synchronize Speech

Product Features

Text to Speech

API
Adjust Speaking Rate / Pitch
Audio Optimization
Custom Lexicons
Different Voice Choices
Multi-Language Support
Synchronize Speech

Alternatives

Alternatives

Veritone Voice Reviews

Veritone Voice

Veritone