MeloTTS vs OpenVoice
A side-by-side comparison of two self-hosted self-hosted ai options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | MeloTTS | OpenVoice |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 23 · At risk | 39 · At risk |
| Category | Self-Hosted AI | Self-Hosted AI |
| License | MIT | MIT |
| Language | Python | Python |
| Setup difficulty | Medium | Medium |
| Min. RAM | 2,048 MB | 4,096 MB |
| Deployment | docker, source | bare-metal, source |
| GitHub stars | ★ 7,647 | ★ 37,647 |
| First released | 2024 | 2023 |
| Replaces | ElevenLabs, Amazon Polly | ElevenLabs |
What are MeloTTS and OpenVoice?
MeloTTS
MeloTTS is an open-source multilingual text-to-speech library from MyShell that supports several languages and accents with fast CPU inference. It can be self-hosted to generate natural speech without cloud services.
- Multilingual speech synthesis
- Real-time CPU inference
- Multiple English accents
- Open weights
OpenVoice
OpenVoice is a voice cloning approach that replicates a speaker's voice from a short reference clip and generates speech in multiple languages. It allows control over emotion, accent, and other style parameters.
- Instant voice cloning
- Cross-lingual synthesis
- Style and emotion control
- Short reference clips
MeloTTS vs OpenVoice: key differences
Both projects are written in Python. MeloTTS is the lighter option, starting around 2,048 MB of RAM against 4,096 MB for OpenVoice. OpenVoice has the considerably larger community, at 37,647 GitHub stars versus 7,647. MeloTTS lists first-class Docker deployment; OpenVoice does not.
Why pick each one
Choose MeloTTS if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Mature project with 7.6k GitHub stars
- Written in Python
Choose OpenVoice if…
- Clones from short clips
- Style and accent control
- Cross-lingual generation
Watch out for
- Python setup required
- Research-grade tooling
Frequently asked questions
Is MeloTTS or OpenVoice better?
Neither is universally better. OpenVoice has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are MeloTTS and OpenVoice free and open-source?
Yes. MeloTTS is licensed under MIT and OpenVoice under MIT. Both can be self-hosted at no software cost.
Can I run MeloTTS and OpenVoice with Docker?
MeloTTS: yes. OpenVoice: check the project docs for container support.
Which is lighter on resources, MeloTTS or OpenVoice?
MeloTTS has the smaller minimum footprint at 2,048 MB of RAM, compared to about 4,096 MB for OpenVoice. Real-world usage depends on library size, user count, and enabled features.