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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.

About

Decibri is a Rust-based audio library for developers building real-time speech, voice-agent, and audio applications. It provides microphone capture, speaker playback, PCM streaming, audio-file processing, and a command-line interface through Python, Node.js, Rust, and browser APIs. Built-in features include voice activity detection, acoustic echo cancellation, and optional audio conditioning such as denoising, filtering, automatic gain control, and limiting. Developers can stream captured audio to cloud or local speech-to-text services and play generated speech through integrated audio output. Use cases include voice assistants, conversational agents, transcription, wake-word and keyword detection, interactive robotics, full-duplex speech, audio pipelines, and edge devices. Prebuilt native packages support Windows, macOS, and Linux; Python and Node.js packages require no additional build tools. The browser implementation provides capture, energy-based speech detection, and playback.

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

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers seeking to build low-latency conversational voice agents with real-time speech recognition, synthesis, and bidirectional interaction

Audience

Software developers, AI engineers, machine-learning teams, and robotics developers building voice agents, speech-enabled applications, and real-time audio pipelines.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

$0
The core audio library is free under Apache-2.0. Fees for cloud speech-service providers are separate.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Microsoft
Founded: 1975
United States
learn.microsoft.com/en-us/azure/ai-services/speech-service/voice-live

Company Information

Decibri
Founded: 2008
Australia
decibri.com

Alternatives

Alternatives

No Alternatives

Categories

Text to Speech Supported

Categories

AI Infrastructure Supported

Integrations

Amazon Transcribe Not Supported
AssemblyAI Not Supported
Azure AI Speech Not Supported
Deepgram Not Supported
GPT-4.1 Supported
GPT-4o Supported
GPT-5 Supported
Google Cloud Speech-to-Text Not Supported
MAI-Voice-2-Flash Supported
Microsoft Azure Supported
OpenAI Realtime API Not Supported
Phi-4 Supported
Voxtral Not Supported
gpt-realtime Supported

Integrations

Amazon Transcribe Supported
AssemblyAI Supported
Azure AI Speech Supported
Deepgram Supported
GPT-4.1 Not Supported
GPT-4o Not Supported
GPT-5 Not Supported
Google Cloud Speech-to-Text Supported
MAI-Voice-2-Flash Not Supported
Microsoft Azure Not Supported
OpenAI Realtime API Supported
Phi-4 Not Supported
Voxtral Supported
gpt-realtime Not Supported
Claim Azure Voice Live API and update features and information
Claim Azure Voice Live API and update features and information
Claim Decibri and update features and information
Claim Decibri and update features and information