We're thrilled to announce the release of Zonos, a groundbreaking open-weight text-to-speech model that's setting new standards in voice synthesis technology. 🎯

What is Zonos?

Zonos is a leading open-weight text-to-speech model trained on more than 200,000 hours of varied multilingual speech. It delivers expressiveness and quality that matches—and often surpasses—top TTS providers, while remaining completely open source.

Key Features

Zero-shot TTS with Voice Cloning

Experience the power of instant voice cloning. With just a 10-30 second audio sample, Zonos can replicate any voice with remarkable accuracy. Simply provide your desired text and a speaker sample to generate high-quality TTS output.

Audio Prefix Enhancement

Take voice matching to the next level with audio prefix inputs. By combining text with an audio prefix, you can achieve even richer speaker matching. This feature enables unique behaviors like whispering, which can be challenging to replicate using speaker embeddings alone.

Multilingual Support

Zonos breaks language barriers with support for multiple languages:

English
Japanese
Chinese
French
German

Fine-grained Control

Enjoy precise control over various aspects of your generated audio:

Speaking rate
Pitch variation
Maximum frequency
Audio quality
Emotional expression (happiness, anger, sadness, fear)

Lightning-fast Generation

Speed matters, and Zonos delivers. Our model achieves a real-time factor of approximately 2x on an RTX 4090, meaning it can generate 2 seconds of audio in just 1 second of compute time.

Technical Specifications

System Requirements

Operating System: Linux (preferably Ubuntu 22.04/24.04) or macOS
GPU: 6GB+ VRAM
Additional: 3000-series or newer Nvidia GPU for Hybrid model
CPU Mode: Available but significantly slower than GPU

Architecture

Zonos follows a straightforward architecture:

Text normalization and phonemization via eSpeak
DAC token prediction through a transformer or hybrid backbone

Getting Started

Try Online

Experience Zonos directly in your browser through our online playground. No installation required!

Local Installation

For those who prefer local deployment:

Use our Docker container for simple setup
Install via pip for more customization
Choose between Transformer and Hybrid models based on your needs

Open Source Commitment

Zonos is proudly open source, released under the Apache 2.0 license. We believe in the power of community-driven development and welcome contributions from developers worldwide.

Looking Forward

This is just the beginning for Zonos. We're actively working on:

Supporting more languages
Improving voice quality
Optimizing performance
Expanding emotional range

Join us in shaping the future of text-to-speech technology. Try Zonos today and experience the next generation of voice synthesis.

"Zonos represents a significant step forward in democratizing high-quality text-to-speech technology. Its combination of quality, speed, and ease of use makes it a game-changer in the field." - Zyphra AI Team

Articles

Introducing Zonos