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Comparison

CosyVoice vs OpenVoice

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 OpenVoice if openVoice is an instant voice cloning tool utilizing an audio foundation model for text-to-speech and zero-shot capabilities.

Markdown twin · CosyVoice alternatives · OpenVoice alternatives

GraphCanon updated Sep 20, 2026

8views this month

CosyVoice logo

CosyVoice

FunAudioLLM/CosyVoice

★ 24kpushed May 25, 2026
vs
OpenVoice logo

OpenVoice

myshell-ai/OpenVoice

★ 38kpushed Apr 19, 2025

Trust & integrity

SignalCosyVoiceOpenVoice
Maintenance
Slowing (117d since push)
As of Sep 20, 2026 · github_public_v1
Dormant (518d 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
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 using an audio foundation model

Stars

CosyVoice
24k
OpenVoice
38k

Forks

CosyVoice
2.7k
OpenVoice
4.2k

Open issues

CosyVoice
697
OpenVoice
310

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
OpenVoice is an instant voice cloning tool utilizing an audio foundation model for text-to-speech and zero-shot capabilities.

Persona

CosyVoice
-
OpenVoice
-

Runtime

CosyVoice
-
OpenVoice
-

License

CosyVoice
Apache-2.0
OpenVoice
Available under the MIT License, allowing free use for both commercial and research purposes.

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
Slowing (36%)
OpenVoice
Dormant (18%)

Days since push

CosyVoice
117d
OpenVoice
518d

Open issues (now)

CosyVoice
697
OpenVoice
310

Stars delta

CosyVoice
+1.3k (30d)
OpenVoice
+544 (30d)

Open issues delta

CosyVoice
-59 (30d)
OpenVoice
+3 (30d)

OSV dependency advisories

CosyVoice
No lockfile (source not queried)
OpenVoice
Published findings

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.
  • Pricing: As it is open-source with a permissive MIT license, usage is free. However, users may need to incur costs for compute resources when deploying scalable solutions..
  • Tags unique to OpenVoice: text-to-speech, tts, voice-clone, zero-shot-tts.
  • When rapid deployment of clone voices is needed without extensive training examples required by other tools due to its zero-shot text-to-speech feature.

When NOT to use OpenVoice

  • If your project requires fine-tuning of voice characteristics beyond what the tool's audio foundation model offers, as other tools may be more customizable.
  • When dealing with niche linguistic requirements or extremely rare language models that might not be well-supported by OpenVoice’s broader focus.
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 24k · OpenVoice 38k (synced Sep 20, 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 using an 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; Pricing: As it is open-source with a permissive MIT license, usage is free. However, users may need to incur costs for compute resources when deploying scalable solutions.; Tags unique to OpenVoice: text-to-speech, tts, voice-clone, zero-shot-tts; When rapid deployment of clone voices is needed without extensive training examples required by other tools due to its zero-shot text-to-speech feature.
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?
If your project requires fine-tuning of voice characteristics beyond what the tool's audio foundation model offers, as other tools may be more customizable. When dealing with niche linguistic requirements or extremely rare language models that might not be well-supported by OpenVoice’s broader focus.
Is CosyVoice or OpenVoice more popular on GitHub?
OpenVoice has more GitHub stars (37,588 vs 23,695). 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: Slowing. 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.

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