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What is Phonon?

Phonon is an open-weight text-to-speech (TTS) model and inference runtime that caters to developers who wish to integrate speech generation into applications with local and offline audio functionalities. This cutting-edge system converts written text into spoken words and can stream speech in real-time as it is generated. It provides interfaces for programming languages such as Rust and Python, includes a Swift package for iOS and macOS, offers JavaScript support for web browsers, and has libraries available for Android; it can also operate as a self-hosted server compatible with OpenAI's API. The model is designed to support various languages, including English, French, German, Spanish, and Portuguese, depending on the specific variant employed. Phonon is ideal for developers looking to embed speech capabilities into mobile, desktop, web, embedded, and server applications, particularly in situations that prioritize offline use or require enhanced privacy. The English model is comprised of 31 million parameters and is licensed under Apache 2.0, while the language-specific and multilingual models, with 40 million parameters, are available under CC BY-NC 4.0. Furthermore, the runtime's source code is offered under either the Apache 2.0 or MIT licenses, ensuring it is accessible for diverse development requirements. This adaptability and extensive support position Phonon as a highly versatile option for speech synthesis across a variety of platforms, making it a valuable asset for developers in the field.

What is Kokoro TTS?

Kokoro TTS is recognized as an advanced text-to-speech platform that accommodates various languages and offers customizable voice features. With a robust architecture comprising 182 million parameters, it delivers high-caliber audio in languages including American English, British English, French, Korean, Japanese, and Mandarin. This tool not only provides lifelike voice options but also incorporates automatic content segmentation and is designed to be compatible with OpenAI, facilitating content creation and integration into applications with ease. Furthermore, leveraging NVIDIA GPU acceleration enables Kokoro TTS to ensure real-time audio generation, making it exceptionally suitable for a diverse array of projects. Its adaptability empowers users to enrich their applications with captivating voiceovers, thereby enhancing user engagement and overall experience.

Media

No images available

Media

No images available

Integrations Supported

Hugging Face

Integrations Supported

Heard
Oxlo.ai
Vision Agents

API Availability

Has API

API Availability

Pricing Information

Pricing not provided
Free Version

Pricing Information

$0
Free Trial Offered?

Supported Platforms

Android
iPhone
iPad
Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS

Customer Service / Support

Not specified

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Not specified

Company Facts

Organization Name

Gradium

Date Founded

2025

Company Location

France, United States

Company Website

gradium.ai/phonon

Company Facts

Organization Name

Kokoro TTS

Date Founded

2024

Company Location

Singapore

Company Website

kokorottsai.com

Categories and Features

Categories and Features

AI Models

Not specified

AI Voice Generators

Not specified

AI Voice Models

Not specified

Text to Speech

Not specified

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