OmniVoice

Transform text into natural speech across 600+ languages with OmniVoice's advanced voice cloning and custom voice design. Experience lightning-fast synthesis powered by cutting-edge diffusion language models.

Try Free Demo View on GitHub

Languages Supported: 600+
Speed Boost: 40x Faster
Model Type: Diffusion LM
License: Open Source

Experience OmniVoice Live Demo

Test voice cloning and custom voice creation in real-time with OmniVoice. Clone any voice from a short audio sample or design unique voices by describing speaker characteristics.

Core Capabilities

Professional Text-to-Speech for Global Applications

OmniVoice delivers advanced multilingual speech synthesis technology with studio-quality audio, unprecedented speed, and flexibility for developers, content creators, and enterprises worldwide.

Massive Language Coverage: OmniVoice supports over 600 languages and dialects, offering the most comprehensive language coverage available in text-to-speech technology. Generate authentic speech with proper accents, intonations, and cultural nuances for truly global voice applications across education, entertainment, accessibility, and business communication.
Dual Voice Generation Modes: Choose between two powerful approaches with OmniVoice: clone existing voices from short audio samples, or design entirely new voices by specifying attributes like gender, age, pitch, speaking style, and regional accents. Both methods produce natural-sounding, emotionally expressive speech without requiring extensive training data or technical expertise.
Lightning-Fast Processing: Achieve real-time factor of 0.025, generating speech 40 times faster than playback speed. This exceptional performance enables instant voice synthesis for interactive applications, live streaming, real-time translation, customer service bots, and large-scale content production without delays or bottlenecks.
Expressive Speech Control: Add emotional depth with non-verbal expressions including laughter, sighs, and various question tones. Fine-tune pronunciation using phonetic notation for both English and Chinese. Adjust speaking pace, pitch variations, and emotional intensity to create engaging, human-like voice performances for audiobooks, podcasts, and virtual assistants.
Enterprise-Ready Infrastructure: Built on scalable diffusion language model architecture optimized for production deployment. Self-host on your own servers for complete data privacy and control, or integrate via API. Supports batch processing across multiple GPUs for high-volume synthesis tasks. Fully documented with Python SDK and command-line tools.
Research-Backed Innovation: Developed by Xiaomi's Next-generation Kaldi team (k2-fsa) with peer-reviewed research published in academic journals. The novel diffusion-based architecture balances synthesis quality with computational efficiency, making professional voice generation accessible to developers and researchers worldwide through open-source collaboration.

Common Questions

What is OmniVoice and how does it work?: OmniVoice is a massive multilingual zero-shot synthesis system supporting over 600 languages. Built on novel diffusion language model architecture, OmniVoice generates high-quality speech with superior inference speed. The platform uniquely combines voice cloning from reference audio and custom voice design through attribute description, all without requiring model retraining.
How extensive is the language support in OmniVoice?: OmniVoice supports over 600 languages and dialects, representing the broadest coverage among available text-to-speech models. It accurately captures regional accents, pronunciation patterns, and cultural speech characteristics across all supported languages, making it ideal for global content localization and multilingual applications.
What's the difference between voice cloning and voice design?: Voice cloning replicates an existing voice from a reference audio sample, capturing its unique characteristics and speaking style. Voice design creates entirely new voices by describing desired attributes such as gender, age range, pitch level, accent type, and speaking style, without needing any reference audio. Both approaches produce natural, high-quality speech suitable for professional applications.
How fast is OmniVoice speech generation?: OmniVoice achieves a Real-Time Factor (RTF) as low as 0.025, meaning it generates speech 40 times faster than real-time playback. For example, producing 10 seconds of audio takes only 0.25 seconds. This exceptional speed makes it perfect for interactive voice agents, live applications, real-time translation services, and large-scale content production workflows.
Is OmniVoice available for commercial use?: Yes, OmniVoice is fully open source and available on GitHub. You can access the complete codebase, deploy on your own infrastructure, and customize it for your specific needs. The model was developed by Xiaomi's Next-generation Kaldi team (k2-fsa) and is freely available for both research and commercial applications.
Can I control pronunciation and add emotional expressions?: Absolutely. The system supports fine-grained control including non-verbal expressions like laughter, sighs, and various question intonations. You can correct pronunciation using pinyin notation for Chinese or phonetic symbols for English. Additionally, you can adjust speaking style, pitch variations, speed, and emotional expressiveness to create engaging, natural-sounding voice performances.