--- title: "CosyVoice vs OpenVoice" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/funaudiollm-cosyvoice-vs-myshell-ai-openvoice" tools: ["funaudiollm-cosyvoice", "myshell-ai-openvoice"] --- # CosyVoice vs OpenVoice *GraphCanon updated Jul 12, 2026* ## 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. [CosyVoice](https://funaudiollm.github.io/cosyvoice3) reports 22k GitHub stars, 2.5k forks, and 767 open issues, last pushed May 25, 2026. [OpenVoice](https://research.myshell.ai/open-voice) has 37k stars, 4.1k forks, and 307 open issues, last pushed Apr 19, 2025. Figures are from public GitHub metadata via [CosyVoice's repository](https://github.com/FunAudioLLM/CosyVoice) and [OpenVoice's repository](https://github.com/myshell-ai/OpenVoice). | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [OpenVoice](/tools/myshell-ai-openvoice.md) | | --- | --- | --- | | Tagline | Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment. | Instant voice cloning by MIT and MyShell. Audio foundation model. | | Stars | 22,089 | 36,914 | | Forks | 2,545 | 4,118 | | Open issues | 767 | 307 | | Language | Python | Python | | Adopt for | 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. | - | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | MIT | | Categories | Inference & Serving, Model Training, Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [OpenVoice](/tools/myshell-ai-openvoice.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Dormant (18%) | | Days since push | 46d | 447d | | Open issues (now) | 767 | 307 | | Security scan | No lockfile | 72 low (72 low) | | Full report | [trust report](/tools/funaudiollm-cosyvoice/trust.md) | [trust report](/tools/myshell-ai-openvoice/trust.md) | ## Decision facts: CosyVoice - **Adopt for:** 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. ## Choose when ### 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. ### 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 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 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. ## 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](/tools/funaudiollm-cosyvoice/alternatives) and [OpenVoice alternatives](/tools/myshell-ai-openvoice/alternatives) ([CosyVoice markdown twin](/tools/funaudiollm-cosyvoice/alternatives.md), [OpenVoice markdown twin](/tools/myshell-ai-openvoice/alternatives.md)), 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](/compare/funaudiollm-cosyvoice-vs-myshell-ai-openvoice.md) 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](/tools/funaudiollm-cosyvoice/trust); [OpenVoice trust report](/tools/myshell-ai-openvoice/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=funaudiollm-cosyvoice`](/api/graphcanon/graph?tool=funaudiollm-cosyvoice) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_