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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

Hume AI's EVI 3 represents a cutting-edge advancement in speech-language technology, seamlessly streaming user speech to create natural and expressive verbal responses. It achieves conversational latency while maintaining the same level of speech quality as our text-to-speech model, Octave, and simultaneously exhibits the intelligence comparable to leading LLMs operating at similar speeds. In addition, it collaborates with reasoning models and web search systems, allowing it to “think fast and slow,” thereby aligning its cognitive capabilities with those of the most sophisticated AI systems available. Unlike traditional models constrained to a limited set of voices, EVI 3 has the ability to instantly generate a vast array of new voices and personalities, engaging users with over 100,000 custom voices already available on our text-to-speech platform, each accompanied by a distinct inferred personality. Regardless of the chosen voice, EVI 3 can convey a diverse spectrum of emotions and styles, either implicitly or explicitly upon request, enhancing user interaction. This versatility makes EVI 3 an invaluable tool for creating personalized and dynamic conversational experiences.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

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

Integrations

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

Pricing Details

No price information available.
Free Trial
Free Version

Pricing Details

Free
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

Hume AI

Founded

2021

Country

United States

Website

www.hume.ai/blog/introducing-evi-3

Product Features

Text to Speech

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

Alternatives

Alternatives

Azure AI Speech Reviews

Azure AI Speech

Microsoft
Octave TTS Reviews

Octave TTS

Hume AI
Veritone Voice Reviews

Veritone Voice

Veritone