MeloTTS
Multilingual text-to-speech library covering English accents, Spanish, French, Chinese, Japanese and Korean: fast enough for CPU real-time.
About
MeloTTS is a multilingual text-to-speech library from MyShell.ai, built by researchers at MIT and Tsinghua on the VITS, VITS2 and Bert-VITS2 lineage. It covers English in five accents (American, British, Indian, Australian and a default), plus Spanish, French, Chinese with mixed Chinese-English support, Japanese and Korean. It ships as a plain Python library with a web UI, and it is fast enough for real-time inference on CPU alone.
The whole library is MIT licensed, so it is free for commercial use, and it has been widely adopted with over seven thousand GitHub stars and third-party ports including a Qualcomm AI Hub build for on-device deployment. The project ships no formal benchmark numbers, so its quality case rests on community adoption rather than measured scores, and the repository has been quiet since late 2024, which is worth knowing before building on it.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
No published benchmarks — the project ships no evaluation numbers; quality claims rest on community adoption (~7.6k GitHub stars) and third-party ports (Qualcomm AI Hub)
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 8/10
Scored 8/10 (TIER verified, metrics-v1). Evidence: MIT-licensed official repo (myshell-ai/MeloTTS, ~7.6k stars); Qualcomm AI Hub on-device port; explicit multi-accent coverage documented in README. Strengths: permissive license, wide adoption, genuinely multilingual. Docked for: (1) no published benchmarks — quality is community-attested, not measured; (2) repo quiet since Dec 2024, maintenance risk. License: MIT.
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 9.0/10
- Maintenance · recency, releases, issue load
- 4.0/10
- Openness · license + docs
- 10.0/10
- Manual review · sanity read + red-flag check
- 8.0/10
- · MyShell.ai multilingual TTS (EN x5 accents, ES, FR, ZH mix-EN, JA, KO); VITS/VITS2/Bert-VITS2 lineage; CPU real-time
- · Official repo myshell-ai/MeloTTS, MIT, ~7.6k stars; Qualcomm AI Hub on-device port
- · No published benchmarks; repo quiet since Dec 2024