Phonon

Phonon

Gradium
+
+

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About

The most realistic and versatile AI speech software, ever. Eleven brings the most compelling, rich and lifelike voices to creators and publishers seeking the ultimate tools for storytelling. Generate top-quality spoken audio in any voice and style with the most advanced and multipurpose AI speech tool out there. Our deep learning model renders human intonation and inflections with unprecedented fidelity and adjusts delivery based on context. Our AI model is built to grasp the logic and emotions behind words. And rather than generate sentences one-by-one, it’s always mindful of how each utterance ties to preceding and succeeding text. This zoomed-out perspective allows it to intonate longer fragments convincingly and with purpose. And finally you can do this with any voice you want.

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 Supported
iPad Supported
Android 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

Users or companies that want powerful AI voice generation software to generate lifelike speech

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 Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$1 per month
From $1 to Enterprise
Free Version Supported
Free Trial Supported

Pricing

No information available.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 4.0 / 5
ease 4.2 / 5
features 4.2 / 5
design 4.0 / 5
support 4.2 / 5

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

Pros & Cons from Real Users

Pros

  • Aesthetic interface. The support team answer quickly when they are interested in selling you crap. A variety of languages and pronunciations just as on similar platforms.
  • Text to speech works seamlessly, consistently accurate and produces a high quality output superior to competitors. The real standout to me is voice cloning, must be experienced to appreciate the magic.
  • I’ve been using ElevanLabs for 6 months now. I’ve been impressed by the quality and range of voices available on TTSA, as well as how responsive the team is. The Discord was a life saver when I started producing audio using the platform and continues to be useful. Their voice cloning is also better than other services I’ve tried.
  • Super realistic voices, even whisper! It's fast (much faster than many others). It has tons of voices. 10.000 credits for free. Super easy download of MP3.

Cons

  • See below. When you realize what crap they sold you, you are strongly suggested to upgrade for an additional $200.
  • Wish it was more popular so there was a bigger community to leverage.
  • A bit on the expensive side once you’re producing a lot of audio, but worth the spend for the quality.
  • The voices change a little bit in tone each time you generate. This is great if you are looking for variations. But if you want 10 separate sentences in 1 tone, you can't generate them sentence by sentence, as they might not match in tone. (I hope you understand what I mean). Always need more voices ;-)

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

ElevenLabs
Founded: 2022
United States
elevenlabs.io

Company Information

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

Alternatives

Alternatives

Qwen3-TTS

Qwen3-TTS

Alibaba
Piper TTS

Piper TTS

Rhasspy
Simba 3.2

Simba 3.2

Speechify
LOVO

LOVO

Love Your Voice
Chirp 3

Chirp 3

Google

Categories

Agentic AI Supported
AI Agent Builders Supported
AI Agents Supported
AI Tools Supported
AI Voice Agents Supported
AI Voice Changers Supported
AI Voice Models Supported
Conversational AI Supported
Dubbing Supported
Generative AI Supported
Speech to Text Supported
Text to Speech Supported
Voice Bot Supported
Voice Cloning Supported
Voice Over Supported

Categories

Text to Speech Features

Adjust Speaking Rate / Pitch Not Supported
API Supported
Audio Optimization Supported
Custom Lexicons Supported
Different Voice Choices Supported
Multi-Language Support Supported
Synchronize Speech Not Supported

Integrations

Bloxks Supported
Clony AI Supported
Composio Supported
Dograh Supported
Eleven Realtime Supported
ElevenCreative Supported
Hunch Supported
Intervo.ai Supported
LazyTyper Supported
Leadlock Supported
Lont Supported
Melies Supported
OpenLIT Supported
PyGPT Supported
React Supported
Sim Studio Supported
Solid Supported
Speax Supported
Vision Agents Supported
Zoice Supported

Integrations

Bloxks Not Supported
Clony AI Not Supported
Composio Not Supported
Dograh Not Supported
Eleven Realtime Not Supported
ElevenCreative Not Supported
Hunch Not Supported
Intervo.ai Not Supported
LazyTyper Not Supported
Leadlock Not Supported
Lont Not Supported
Melies Not Supported
OpenLIT Not Supported
PyGPT Not Supported
React Not Supported
Sim Studio Not Supported
Solid Not Supported
Speax Not Supported
Vision Agents Not Supported
Zoice Not Supported
Claim ElevenLabs and update features and information
Claim ElevenLabs and update features and information
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