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Home/Compare/CosyVoice vs OpenVoice

Comparison

CosyVoice vs OpenVoice

Verdict

Pick CosyVoice when license: CosyVoice is Apache-2.0, OpenVoice is MIT; pick OpenVoice when license: OpenVoice is MIT, CosyVoice is Apache-2.0.

Markdown twin · CosyVoice alternatives · OpenVoice alternatives

GraphCanon updated today

CosyVoice logo

CosyVoice

FunAudioLLM/CosyVoice

★ 22kpushed May 25, 2026
vs
OpenVoice logo

OpenVoice

myshell-ai/OpenVoice

★ 37kpushed Apr 19, 2025

Trust & integrity

SignalCosyVoiceOpenVoice
Maintenance
Steady (46d since push)
As of today · github_public_v1
Dormant (447d since push)
As of today · github_public_v1
Provenance
Not a fork · Organization account
As of today · github_public_v1
Not a fork · Organization account
As of today · github_public_v1
Security (OSV)
No lockfile
As of today · none
72 low (72 low)
As of today · osv@v1
CosyVoice trust reportOpenVoice trust reportTrust methodology

Tagline

CosyVoice
Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.
OpenVoice
Instant voice cloning by MIT and MyShell. Audio foundation model.

Stars

CosyVoice
22k
OpenVoice
37k

Forks

CosyVoice
2.5k
OpenVoice
4.1k

Open issues

CosyVoice
767
OpenVoice
307

Language

CosyVoice
Python
OpenVoice
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.
OpenVoice
-

Persona

CosyVoice
-
OpenVoice
-

Runtime

CosyVoice
-
OpenVoice
-

License

CosyVoice
Apache-2.0
OpenVoice
MIT

Last pushed

CosyVoice
May 25, 2026
OpenVoice
Apr 19, 2025

Categories

CosyVoice
Inference & Serving, Model Training, Speech & Audio
OpenVoice
Speech & Audio

Trust and health

Maintenance

CosyVoice
Steady (60%)
OpenVoice
Dormant (18%)

Days since push

CosyVoice
46d
OpenVoice
447d

Open issues (now)

CosyVoice
767
OpenVoice
307

Security scan

CosyVoice
No lockfile
OpenVoice
72 low (72 low)

Full report

CosyVoice
Trust report
OpenVoice
Trust report

Choose CosyVoice if…

  • License: CosyVoice is Apache-2.0, OpenVoice 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.
GitHubDetails

Choose OpenVoice if…

  • License: OpenVoice is MIT, CosyVoice is Apache-2.0.
  • Tags unique to OpenVoice: python, text-to-speech, tts, voice-clone.
  • More GitHub stars (37k vs 22k) - visibility, not fit.

When NOT to use OpenVoice

  • Last GitHub push was 448 days ago (dormant maintenance, Apr 19, 2025). Validate activity before betting a new project on OpenVoice.
GitHubDetails

Explore

CosyVoice trust report →OpenVoice trust report →Inference & Serving category →Model Training category →Speech & Audio category →All comparisonsStack workflowsTrending tools

Sources

Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.

GitHub stars on cards: CosyVoice 22k · OpenVoice 37k (synced Jul 11, 2026).

Common questions

What is the difference between CosyVoice and OpenVoice?
CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. OpenVoice: Instant voice cloning by MIT and MyShell. Audio foundation model.. See the comparison table for live GitHub stats and shared categories.
When should I choose CosyVoice over OpenVoice?
Choose CosyVoice over OpenVoice when License: CosyVoice is Apache-2.0, OpenVoice 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 OpenVoice over CosyVoice?
Choose OpenVoice over CosyVoice when License: OpenVoice is MIT, CosyVoice is Apache-2.0; Tags unique to OpenVoice: python, text-to-speech, tts, voice-clone; More GitHub stars (37k vs 22k) - visibility, not fit.
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 OpenVoice?
Last GitHub push was 448 days ago (dormant maintenance, Apr 19, 2025). Validate activity before betting a new project on OpenVoice.
Is CosyVoice or OpenVoice more popular on GitHub?
OpenVoice has more GitHub stars (36,914 vs 22,089). Stars measure visibility, not whether either tool fits your constraints.
Are CosyVoice and OpenVoice open source?
Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, OpenVoice: MIT).
Where can I find alternatives to CosyVoice or OpenVoice?
GraphCanon lists graph-backed alternatives at CosyVoice alternatives and OpenVoice alternatives (CosyVoice markdown twin, OpenVoice 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 OpenVoice?
CosyVoice: Steady. OpenVoice: 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 OpenVoice?
GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: CosyVoice trust report; OpenVoice trust report.