Amazon PollyAmazon
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Azure Voice Live APIMicrosoft
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Related Products
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About
Amazon Polly is a service that turns text into lifelike speech, allowing you to create applications that talk, and build entirely new categories of speech-enabled products. Polly's Text-to-Speech (TTS) service uses advanced deep learning technologies to synthesize natural sounding human speech. With dozens of lifelike voices across a broad set of languages, you can build speech-enabled applications that work in many different countries.
In addition to Standard TTS voices, Amazon Polly offers Neural Text-to-Speech (NTTS) voices that deliver advanced improvements in speech quality through a new machine learning approach. Polly’s Neural TTS technology also supports two speaking styles that allow you to better match the delivery style of the speaker to the application: a Newscaster reading style that is tailored to news narration use cases, and a Conversational speaking style that is ideal for two-way communication like telephony applications.
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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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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
Organizations that want to create applications that talk, and build entirely new categories of speech-enabled products using text-to-speech technology
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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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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.
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 InformationAmazon
Founded: 1994
United States
aws.amazon.com/polly/
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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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Alternatives |
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
1forAll.ai
AWS AI Services
AWS App Mesh
AWS Lambda
Amazon S3
Amazon Web Services (AWS)
Bolna
Fleece AI
GPT-4.1
GPT-5
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Integrations
1forAll.ai
AWS AI Services
AWS App Mesh
AWS Lambda
Amazon S3
Amazon Web Services (AWS)
Bolna
Fleece AI
GPT-4.1
GPT-5
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