OmniVoice
Free AI voice generator and voice cloning in 646 languages. Open source, Apache 2.0.
What is OmniVoice?
OmniVoice is a free, open-source AI voice generator that supports 646 languages. It converts text to natural-sounding speech, clones voices from a short audio sample (zero-shot Voice Cloning), or creates a voice from a text description alone (Voice Design). Developed by the k2-fsa research team and trained on 581,000 hours of open-source speech data. OmniVoice is released under Apache 2.0, free for personal and commercial use.
What can OmniVoice do?
646 Languages
Supports 646 languages with one unified model.
Zero-Shot Voice Cloning
Clone any voice from a 3-25 second sample, no training.
Voice Design
Create a voice from text description alone.
Expressive Speech
Renders non-verbal sounds like [laughter] and [sigh].
Cross-Lingual Cloning
Clone voice from one language, synthesize in any other.
Single-Stage Architecture
Maps text directly to audio in a single pass.
Production-Ready Speed
RTF 0.022 on batch inference; 60s audio in ~1.3s.
Open Source
Released under Apache 2.0, free for commercial use.
Who is OmniVoice for?
- Audiobook narrators
- Long-form narration for books and stories
- Game developers
- Dynamic character voices for games (NPC Dialogue)
- Podcasters
- Branded intros and promo audio
- Language tutors
- Clear pronunciation for language learning
- Customer support teams
- Conversational voices for support workflows
OmniVoice has a free plan, with paid upgrades for more usage or features.
Frequently Asked Questions
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