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 2d
vs
Trust & integrity
| Signal | CosyVoice | OpenVoice |
|---|---|---|
| Maintenance | Steady (89d since push) As of 2d · github_public_v1 | Dormant (465d since push) As of 4w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 2d · github_public_v1 | Not a fork · Organization account As of 4w · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | Published findings As of 1mo · 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.
- OpenVoice
- Instant voice cloning using an audio foundation model
Stars
- CosyVoice
- 23k
- OpenVoice
- 37k
Forks
- CosyVoice
- 2.6k
- OpenVoice
- 4.1k
Open issues
- CosyVoice
- 719
- 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
- 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
- Steady (60%)
- OpenVoice
- Dormant (18%)
Days since push
- CosyVoice
- 89d
- OpenVoice
- 465d
Open issues (now)
- CosyVoice
- 719
- OpenVoice
- 307
Stars delta
- CosyVoice
- +497 (30d)
- OpenVoice
- Unknown
Open issues delta
- CosyVoice
- -37 (30d)
- OpenVoice
- Unknown
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.
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.
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 Aug 23, 2026
- GitHub forks (FunAudioLLM/CosyVoice) · observed Aug 23, 2026
- Last push (FunAudioLLM/CosyVoice) · observed May 25, 2026
- License file (Apache-2.0) · observed Aug 23, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (myshell-ai/OpenVoice) · observed Jul 29, 2026
- GitHub forks (myshell-ai/OpenVoice) · observed Jul 29, 2026
- Last push (myshell-ai/OpenVoice) · observed Apr 19, 2025
- License file (MIT) · observed Jul 29, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: CosyVoice 23k · OpenVoice 37k (synced Aug 23, 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 (37,044 vs 22,870). 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.