myshell-ai/OpenVoice
Instant voice cloning by MIT and MyShell. Audio foundation model.
Build with Backblaze B2
SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.
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Where it stands
Rank, growth pace and release cadence relative to everything GStars tracks.
The project lists 14 contributors on GitHub.
Use Cases & Benefits
- Provides instant voice cloning with accurate tone color and flexible style control across multiple languages and accents.
- Enables zero-shot cross-lingual voice cloning with native multi-lingual support and free commercial use under the MIT license.
- Use for creating personalized text-to-speech voices in multilingual applications without requiring training data in target languages.
- Use for developing expressive voice assistants that require fine-grained control over emotion, rhythm, and intonation.
- Use for research and commercial projects needing high-quality, versatile voice cloning with open-source accessibility.
Should you depend on it?
License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.
License
MIT
Permissive: commercial use, modification and redistribution are allowed with attribution.
Community files
- README: present
Watch-outs
- Warning: No commits in over a year (last push Apr 2025).
- No GitHub releases; pin a commit or tag instead of a release.
General guidance from repository metadata, not legal advice. How we score
From the README
As we detailed in our paper and website, the advantages of OpenVoice are three-fold:
1. Accurate Tone Color Cloning. OpenVoice can accurately clone the reference tone color and generate speech in multiple languages and accents.
2. Flexible Voice Style Control. OpenVoice enables granular control over voice styles, such as emotion and accent, as well as other style parameters including rhythm, pauses, and intonation.
3. Zero-shot Cross-lingual Voice Cloning. Neither of the language of the generated speech nor the language of the reference speech needs to be presented in the massive-speaker multi-lingual training dataset.
In April 2024, we released OpenVoice V2, which includes all features in V1 and has:
1. Better Audio Quality. OpenVoice V2 adopts a different training strategy that delivers better audio quality.
2. Native Multi-lingual Support. English, Spanish, French, Chinese, Japanese and Korean are natively supported in OpenVoice V2.
3. Free Commercial Use. Starting from April 2024, both V2 and V1 are released under MIT License. Free for commercial use.
OpenVoice has been powering the instant voice cloning capability of myshell.ai since May 2023. Until Nov 2023, the voice cloning model has been used tens of millions of times by users worldwide, and witnessed the explosive user growth on the platform.
Daily snapshots
Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots
+1,023 stars over 82 days across 8 snapshot days; best day +9 on Aug 31.
Forks
4.3K+138
Open issues
317+10
Compared with peers in Backend
Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth
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|---|---|---|---|---|
| anthropics/skills | 192.3K | +5.2K | 75 | — |
| zed-industries/zed | 94.7K | +2.3K | 75 | 6 days ago |
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| DuarteSantos8/openGym | 20.8K | +1.7K | 75 | 7 days ago |
| myshell-ai/OpenVoice | 38.2K | — | 13 | — |
| Category median | 94.7K | +2.0K | 75 | — |
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