Phonon

Phonon

Gradium
+
+

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About

Google has released updated Gemini audio models that significantly expand the platform’s capabilities for natural, expressive voice interactions and real-time conversational AI with the introduction of Gemini 2.5 Flash Native Audio and improved text-to-speech technology. The updated native audio model powers live voice agents that can handle complex workflows, follow detailed user instructions more reliably, and maintain smoother multi-turn conversations by better recalling context from previous turns. It is now available across Google AI Studio,Gemini Enterprise Agent Platform, Gemini Live, and Search Live, enabling developers and products to build interactive voice experiences such as intelligent assistants and enterprise voice agents. In addition to the real-time voice improvements, Google enhanced the underlying Text-to-Speech (TTS) models in the Gemini 2.5 family to offer greater expressivity, tone control, pacing adjustments, and multilingual support.

About

Phonon is an open-weight text-to-speech (TTS) model and inference runtime for developers adding speech generation to applications that need local, offline audio. It converts text into spoken audio and can stream speech as it is generated. The runtime provides Rust and Python interfaces, a Swift package for iOS and macOS, JavaScript for browsers, and Android libraries; it can also run as a self-hosted server with an OpenAI-compatible API. Depending on the model variant, it supports English, French, German, Spanish, and Portuguese. Phonon is intended for developers integrating speech into mobile, desktop, web, embedded, and server applications, including offline or privacy-sensitive use cases. The 31-million-parameter English model weights use the Apache 2.0 license; 40-million-parameter language-specific and multilingual weights use CC BY-NC 4.0. The runtime code is separately available under Apache 2.0 or MIT.

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 Supported
iPad Supported
Android Supported
Chromebook Not Supported

Audience

Developers and product teams who need advanced, real-time voice and speech generation capabilities to build interactive, expressive conversational agents and multilingual audio applications

Audience

Developers and product teams building mobile, desktop, web, embedded, or server applications that need text-to-speech, including offline or privacy-sensitive use cases.

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 Not Supported

API

Offers API Not 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

No information available.
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

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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 Supported
In Person Not Supported

Training

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

Company Information

Google
Founded: 1998
United States
blog.google/products/gemini/gemini-audio-model-updates/

Company Information

Gradium
Founded: 2025
France, United States
gradium.ai/phonon

Alternatives

Alternatives

Qwen3-TTS

Qwen3-TTS

Alibaba
Piper TTS

Piper TTS

Rhasspy
MAI-Transcribe-1.5

MAI-Transcribe-1.5

Microsoft AI
Simba 3.2

Simba 3.2

Speechify
Inkling

Inkling

Thinking Machines Lab

Categories

AI Models Supported
AI Voice Agents Supported
AI Voice Models Supported

Categories

Integrations

Agent Search on Gemini Enterprise Agent Platform Supported
Gemini Supported
Gemini Enterprise Agent Platform Supported
Google AI Studio Supported
Google Translate Supported
Hugging Face Not Supported

Integrations

Agent Search on Gemini Enterprise Agent Platform Not Supported
Gemini Not Supported
Gemini Enterprise Agent Platform Not Supported
Google AI Studio Not Supported
Google Translate Not Supported
Hugging Face Supported
Claim Gemini 2.5 Flash Native Audio and update features and information
Claim Gemini 2.5 Flash Native Audio and update features and information
Claim Phonon and update features and information
Claim Phonon and update features and information