Comparison
CosyVoice vs MeloTTS
Verdict
Pick CosyVoice if cosyVoice is a Python-based multi-lingual large voice generation model. It supports extensive capabilities including fine-tuning, TTS (Text-To-Speech), and natural language generation; pick MeloTTS if meloTTS is an MIT-licensed Python library for high-quality multi-lingual text-to-speech, supporting English, Spanish, French, Chinese, Japanese and Korean.
Markdown twin · CosyVoice alternatives · MeloTTS alternatives
GraphCanon updated Sep 20, 2026
vs
Trust & integrity
| Signal | CosyVoice | MeloTTS |
|---|---|---|
| Maintenance | Slowing (117d since push) As of Sep 20, 2026 · github_public_v1 | Dormant (634d since push) As of Sep 20, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 20, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 20, 2026 · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of Jul 11, 2026 · osv@v1 | Published findings As of Jul 11, 2026 · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- CosyVoice
- Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.
- MeloTTS
- High-quality multi-lingual text-to-speech library by MyShell.ai
Stars
- CosyVoice
- 24k
- MeloTTS
- 7.6k
Forks
- CosyVoice
- 2.7k
- MeloTTS
- 1.1k
Open issues
- CosyVoice
- 697
- MeloTTS
- 232
Language
- CosyVoice
- Python
- MeloTTS
- Python
Adopt for
- CosyVoice
- CosyVoice is a Python-based multi-lingual large voice generation model. It supports extensive capabilities including fine-tuning, TTS (Text-To-Speech), and natural language generation.
- MeloTTS
- MeloTTS is an MIT-licensed Python library for high-quality multi-lingual text-to-speech, supporting English, Spanish, French, Chinese, Japanese and Korean.
Persona
- CosyVoice
- -
- MeloTTS
- -
Runtime
- CosyVoice
- -
- MeloTTS
- -
License
- CosyVoice
- Apache-2.0
- MeloTTS
- MIT
Last pushed
- CosyVoice
- May 25, 2026
- MeloTTS
- Dec 24, 2024
Categories
- CosyVoice
- Inference & Serving, Model Training, Speech & Audio
- MeloTTS
- Speech & Audio
Trust and health
Maintenance
- CosyVoice
- Slowing (36%)
- MeloTTS
- Dormant (18%)
Days since push
- CosyVoice
- 117d
- MeloTTS
- 634d
Open issues (now)
- CosyVoice
- 697
- MeloTTS
- 232
Stars delta
- CosyVoice
- +1.3k (30d)
- MeloTTS
- +93 (30d)
Open issues delta
- CosyVoice
- -59 (30d)
- MeloTTS
- 0 (30d)
OSV dependency advisories
- CosyVoice
- No lockfile (source not queried)
- MeloTTS
- Published findings
Full report
- CosyVoice
- Trust report
- MeloTTS
- Trust report
Choose CosyVoice if…
- License: CosyVoice is Apache-2.0, MeloTTS is MIT.
- Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt.
- Also covers Inference & Serving, Model Training.
- When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean.
When NOT to use CosyVoice
- If your project specifically requires fine-tuned performance in languages not supported by CosyVoice such as Arabic or Spanish.
- When strict real-time speech synthesis requirements are essential, as CosyVoice may face delays depending on the environment's computational power and model complexity.
Choose MeloTTS if…
- License: MeloTTS is MIT, CosyVoice is Apache-2.0.
- Tags unique to MeloTTS: french, japanese, korean, multilingual.
- MeloTTS ships Docker support for self-hosted deployment.
- If your project requires support for a broad language range including less common languages like Japanese or Korean in a TTS solution.
When NOT to use MeloTTS
- If your application's required languages are not covered by MeloTTS, such as Arabic or Russian.
- In situations where you need more customization options for TTS than what the library provides out-of-the-box.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (FunAudioLLM/CosyVoice) · observed Sep 20, 2026
- GitHub forks (FunAudioLLM/CosyVoice) · observed Sep 20, 2026
- Last push (FunAudioLLM/CosyVoice) · observed May 25, 2026
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (myshell-ai/MeloTTS) · observed Sep 20, 2026
- GitHub forks (myshell-ai/MeloTTS) · observed Sep 20, 2026
- Last push (myshell-ai/MeloTTS) · observed Dec 24, 2024
- License file (MIT) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: CosyVoice 24k · MeloTTS 7.6k (synced Sep 20, 2026).
Common questions
- What is the difference between CosyVoice and MeloTTS?
- CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. MeloTTS: High-quality multi-lingual text-to-speech library by MyShell.ai. See the comparison table for live GitHub stats and shared categories.
- When should I choose CosyVoice over MeloTTS?
- Choose CosyVoice over MeloTTS when License: CosyVoice is Apache-2.0, MeloTTS is MIT; Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt; Also covers Inference & Serving, Model Training; When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean.
- When should I choose MeloTTS over CosyVoice?
- Choose MeloTTS over CosyVoice when License: MeloTTS is MIT, CosyVoice is Apache-2.0; Tags unique to MeloTTS: french, japanese, korean, multilingual; MeloTTS ships Docker support for self-hosted deployment; If your project requires support for a broad language range including less common languages like Japanese or Korean in a TTS solution.
- When should I avoid CosyVoice?
- If your project specifically requires fine-tuned performance in languages not supported by CosyVoice such as Arabic or Spanish. When strict real-time speech synthesis requirements are essential, as CosyVoice may face delays depending on the environment's computational power and model complexity.
- When should I avoid MeloTTS?
- If your application's required languages are not covered by MeloTTS, such as Arabic or Russian. In situations where you need more customization options for TTS than what the library provides out-of-the-box.
- Is CosyVoice or MeloTTS more popular on GitHub?
- CosyVoice has more GitHub stars (23,695 vs 7,644). Stars measure visibility, not whether either tool fits your constraints.
- Are CosyVoice and MeloTTS open source?
- Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, MeloTTS: MIT).
- Where can I find alternatives to CosyVoice or MeloTTS?
- GraphCanon lists graph-backed alternatives at CosyVoice alternatives and MeloTTS alternatives (CosyVoice markdown twin, MeloTTS markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, CosyVoice or MeloTTS?
- CosyVoice: Slowing. MeloTTS: Dormant. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for CosyVoice and MeloTTS?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: CosyVoice trust report; MeloTTS trust report.