--- title: "CosyVoice vs auto-evaluator" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/funaudiollm-cosyvoice-vs-langchain-ai-auto-evaluator" tools: ["funaudiollm-cosyvoice", "langchain-ai-auto-evaluator"] --- # CosyVoice vs auto-evaluator *GraphCanon updated Jul 12, 2026* ## Verdict Pick CosyVoice when cosyVoice is primarily Python; auto-evaluator is TypeScript; pick auto-evaluator when auto-evaluator is primarily TypeScript; CosyVoice is Python. [CosyVoice](https://funaudiollm.github.io/cosyvoice3) reports 22k GitHub stars, 2.5k forks, and 767 open issues, last pushed May 25, 2026. [auto-evaluator](https://autoevaluator.langchain.com/) has 782 stars, 103 forks, and 21 open issues, last pushed Jun 26, 2025. Figures are from public GitHub metadata via [CosyVoice's repository](https://github.com/FunAudioLLM/CosyVoice) and [auto-evaluator's repository](https://github.com/langchain-ai/auto-evaluator). | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [auto-evaluator](/tools/langchain-ai-auto-evaluator.md) | | --- | --- | --- | | Tagline | Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment. | auto-evaluator | | Stars | 22,089 | 782 | | Forks | 2,545 | 103 | | Open issues | 767 | 21 | | Language | Python | TypeScript | | 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 | Other | | Categories | Inference & Serving, Model Training, Speech & Audio | Inference & Serving | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [auto-evaluator](/tools/langchain-ai-auto-evaluator.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Archived (8%) | | Days since push | 46d | 380d | | Archived on GitHub | No | Yes | | Open issues (now) | 767 | 21 | | Full report | [trust report](/tools/funaudiollm-cosyvoice/trust.md) | [trust report](/tools/langchain-ai-auto-evaluator/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… - CosyVoice is primarily Python; auto-evaluator is TypeScript. - License: CosyVoice is Apache-2.0, auto-evaluator is Other. - Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt. - Also covers Model Training, Speech & Audio. - When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean. ### Choose auto-evaluator if… - auto-evaluator is primarily TypeScript; CosyVoice is Python. - License: auto-evaluator is Other, CosyVoice is Apache-2.0. - Tags unique to auto-evaluator: typescript. ## 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 auto-evaluator - auto-evaluator is archived on GitHub. Prefer an active alternative unless you maintain a private fork or need a frozen dependency. - Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. ## Common questions ### What is the difference between CosyVoice and auto-evaluator? CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. auto-evaluator: auto-evaluator. See the comparison table for live GitHub stats and shared categories. ### When should I choose CosyVoice over auto-evaluator? Choose CosyVoice over auto-evaluator when CosyVoice is primarily Python; auto-evaluator is TypeScript; License: CosyVoice is Apache-2.0, auto-evaluator is Other; Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt; Also covers Model Training, Speech & Audio; When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean. ### When should I choose auto-evaluator over CosyVoice? Choose auto-evaluator over CosyVoice when auto-evaluator is primarily TypeScript; CosyVoice is Python; License: auto-evaluator is Other, CosyVoice is Apache-2.0; Tags unique to auto-evaluator: typescript. ### 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 auto-evaluator? auto-evaluator is archived on GitHub. Prefer an active alternative unless you maintain a private fork or need a frozen dependency. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. ### Is CosyVoice or auto-evaluator more popular on GitHub? CosyVoice has more GitHub stars (22,089 vs 782). Stars measure visibility, not whether either tool fits your constraints. ### Are CosyVoice and auto-evaluator open source? Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, auto-evaluator: Other). ### Where can I find alternatives to CosyVoice or auto-evaluator? GraphCanon lists graph-backed alternatives at [CosyVoice alternatives](/tools/funaudiollm-cosyvoice/alternatives) and [auto-evaluator alternatives](/tools/langchain-ai-auto-evaluator/alternatives) ([CosyVoice markdown twin](/tools/funaudiollm-cosyvoice/alternatives.md), [auto-evaluator markdown twin](/tools/langchain-ai-auto-evaluator/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-langchain-ai-auto-evaluator.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, CosyVoice or auto-evaluator? CosyVoice: Steady. auto-evaluator: Archived. 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 auto-evaluator? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [CosyVoice trust report](/tools/funaudiollm-cosyvoice/trust); [auto-evaluator trust report](/tools/langchain-ai-auto-evaluator/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/_