Phonon

Phonon

Gradium
+
+

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About

KugelAudio is the most realistic speech AI platform, combining text-to-speech, speech-to-text, and voice-to-voice in one stack. With 39-50ms inference latency (lowest on the market), 30-second voice cloning, on-premises deployment, and industry-leading accuracy on email addresses, IBANs, and phone numbers, it's built for production voice applications where quality and compliance matter. It's a strong fit for voice bots and conversational agents that need to handle structured data without misreads, real-time applications requiring sub-50ms latency, and regulated industries like banking, insurance, healthcare, and the public sector that need on-premises or EU-sovereign deployment. Beyond enterprise voice automation, KugelAudio also powers branded voice experiences through natural cloning from 30 seconds of audio, multilingual products across over 30 languages German, English, French, and Italian, and media or content production needing the most realistic synthetic voices available.

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 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

KugelAudio is for teams shipping production voice applications where quality, latency, and compliance are non-negotiable, from conversational AI and contact-center platforms to banks, insurers, healthcare, and public-sector deployments with strict GDPR or on-premises requirements. It's equally suited to media, audiobook, e-learning, gaming, and accessibility teams that need realistic multilingual speech, fast voice cloning, and the freedom to host on managed API, EU-sovereign cloud, or fully air-gapped infrastructure.

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 Supported
24/7 Live Support 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

No images available

Screenshots and Videos

No images available

Pricing

$1
Free Version Not Supported
Free Trial 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 Not Supported
In Person Supported

Training

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

Company Information

KugelAudio
Founded: 2025
Germany
kugelaudio.com

Company Information

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

Alternatives

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Fish Audio

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Simba 3.2

Simba 3.2

Speechify
Voxtral TTS

Voxtral TTS

Mistral AI
Chirp 3

Chirp 3

Google

Categories

Categories

Integrations

Hugging Face Not Supported

Integrations

Hugging Face Supported
Claim KugelAudio and update features and information
Claim KugelAudio and update features and information
Claim Phonon and update features and information
Claim Phonon and update features and information