--- title: "CosyVoice vs RHVoice" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/funaudiollm-cosyvoice-vs-rhvoice-rhvoice" tools: ["funaudiollm-cosyvoice", "rhvoice-rhvoice"] --- # CosyVoice vs RHVoice *GraphCanon updated Aug 23, 2026* ## 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 RHVoice if rHVoice is an open-source text-to-speech system developed for Russian and multiple other languages employing statistical parametric synthesis. [CosyVoice](https://funaudiollm.github.io/cosyvoice3) reports 23k GitHub stars, 2.6k forks, and 719 open issues, last pushed May 25, 2026. [RHVoice](https://rhvoice.org) has 1.8k stars, 266 forks, and 168 open issues, last pushed Jul 20, 2026. Figures are from public GitHub metadata via [CosyVoice's repository](https://github.com/FunAudioLLM/CosyVoice) and [RHVoice's repository](https://github.com/RHVoice/RHVoice). | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [RHVoice](/tools/rhvoice-rhvoice.md) | | --- | --- | --- | | Tagline | Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment. | a free and open source speech synthesizer for Russian and other languages | | Stars | 22,870 | 1,826 | | Forks | 2,631 | 266 | | Open issues | 719 | 168 | | Language | Python | C++ | | 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. | RHVoice is an open-source text-to-speech system developed for Russian and multiple other languages employing statistical parametric synthesis. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | GPL-2.0 | | 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) | [RHVoice](/tools/rhvoice-rhvoice.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Active (82%) | | Days since push | 89d | 9d | | Open issues (now) | 719 | 168 | | Stars delta | +497 (30d) | Unknown | | Open issues delta | -37 (30d) | Unknown | | Full report | [trust report](/tools/funaudiollm-cosyvoice/trust.md) | [trust report](/tools/rhvoice-rhvoice/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. ## Decision facts: RHVoice - **Adopt for:** RHVoice is an open-source text-to-speech system developed for Russian and multiple other languages employing statistical parametric synthesis. ## Choose when ### Choose CosyVoice if… - CosyVoice is primarily Python; RHVoice is C++. - License: CosyVoice is Apache-2.0, RHVoice is GPL-2.0. - 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 RHVoice if… - RHVoice is primarily C++; CosyVoice is Python. - License: RHVoice is GPL-2.0, CosyVoice is Apache-2.0. - Tags unique to RHVoice: brazilian portuguese, esperanto, georgian, kyrgyz. - - When you need support for less commonly supported languages such as Kyrgyz, Tatar, or Albanian. ## 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 RHVoice - - Avoid if seeking support exclusively for widely used languages like Spanish or Mandarin, where other options may offer more resources and community support. - - Not ideal in scenarios where the naturalness of speech synthesis is critical over intelligibility and memory efficiency. ## Common questions ### What is the difference between CosyVoice and RHVoice? CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. RHVoice: a free and open source speech synthesizer for Russian and other languages. See the comparison table for live GitHub stats and shared categories. ### When should I choose CosyVoice over RHVoice? Choose CosyVoice over RHVoice when CosyVoice is primarily Python; RHVoice is C++; License: CosyVoice is Apache-2.0, RHVoice is GPL-2.0; 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 RHVoice over CosyVoice? Choose RHVoice over CosyVoice when RHVoice is primarily C++; CosyVoice is Python; License: RHVoice is GPL-2.0, CosyVoice is Apache-2.0; Tags unique to RHVoice: brazilian portuguese, esperanto, georgian, kyrgyz; - When you need support for less commonly supported languages such as Kyrgyz, Tatar, or Albanian. ### 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 RHVoice? - Avoid if seeking support exclusively for widely used languages like Spanish or Mandarin, where other options may offer more resources and community support. - Not ideal in scenarios where the naturalness of speech synthesis is critical over intelligibility and memory efficiency. ### Is CosyVoice or RHVoice more popular on GitHub? CosyVoice has more GitHub stars (22,870 vs 1,826). Stars measure visibility, not whether either tool fits your constraints. ### Are CosyVoice and RHVoice open source? Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, RHVoice: GPL-2.0). ### Where can I find alternatives to CosyVoice or RHVoice? GraphCanon lists graph-backed alternatives at [CosyVoice alternatives](/tools/funaudiollm-cosyvoice/alternatives) and [RHVoice alternatives](/tools/rhvoice-rhvoice/alternatives) ([CosyVoice markdown twin](/tools/funaudiollm-cosyvoice/alternatives.md), [RHVoice markdown twin](/tools/rhvoice-rhvoice/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-rhvoice-rhvoice.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, CosyVoice or RHVoice? CosyVoice: Steady. RHVoice: Active. 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 RHVoice? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [CosyVoice trust report](/tools/funaudiollm-cosyvoice/trust); [RHVoice trust report](/tools/rhvoice-rhvoice/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/_