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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

A powerful speech platform designed to transform applications into Voice Bots, InterpreXer™ adheres to the W3C VoiceXML 2.1 standard, enabling the development of dynamic voice-driven interfaces while being seamlessly integrated with automatic speech recognition (ASR) and text-to-speech (TTS) technologies. This flexible solution can be deployed on standard hardware or cloud virtual machines, allowing for substantial scalability to manage millions of voice bot interactions via telephone. It is fully compliant with the VoiceXML 2.1 guidelines set forth by the W3C. Additionally, users can effortlessly synchronize applications with any customer relationship management (CRM) tools or other backend systems using web hooks. The platform also supports triggering CTI events for leading contact center solutions directly from the bot interface. With the ability to connect to various speech recognition and text-to-speech engines dynamically, businesses enjoy the flexibility to adapt their services according to changing demands. Moreover, it facilitates the deployment of thousands of ports in a distributed, high-availability setting, ensuring that scalability and reliability are readily achievable. This comprehensive system caters to the evolving requirements of modern enterprises, empowering them to enhance customer interactions effectively.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

Screenshots View All

Integrations

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

Integrations

GPT-4.1 No 
GPT-4o No 
GPT-5 No 
MAI-Voice-2-Flash No 
Microsoft Azure No 
Phi-4 No 
gpt-realtime No 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs No 
Webinars No 
Live Training (Online) No 
In Person No 

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

Phonologies

Founded

2001

Country

India

Website

phonologies.com/interprexer/

Product Features

Text to Speech

API No 
Adjust Speaking Rate / Pitch No 
Audio Optimization No 
Custom Lexicons No 
Different Voice Choices No 
Multi-Language Support No 
Synchronize Speech No 

Product Features

IVR

Call Center No 
Call Logging No 
Call Recording No 
Call Routing No 
Multiple Scripts No 
Phone Key Input No 
Survey Management No 
Text to Speech No 
Voice Customization No 
Voice Mail No 

Alternatives

Alternatives

Azure AI Speech Reviews

Azure AI Speech

Microsoft
VoiceGuide IVR Reviews

VoiceGuide IVR

Katalina Technologies Pty Ltd