--- title: "CosyVoice vs kaldi" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/funaudiollm-cosyvoice-vs-kaldi-asr-kaldi" tools: ["funaudiollm-cosyvoice", "kaldi-asr-kaldi"] --- # CosyVoice vs kaldi *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 kaldi if kaldi stands out among speech recognition toolkits with its comprehensive C++ libraries and strong community support for contributors. [CosyVoice](https://funaudiollm.github.io/cosyvoice3) reports 23k GitHub stars, 2.6k forks, and 719 open issues, last pushed May 25, 2026. [kaldi](http://kaldi-asr.org) has 15k stars, 5.4k forks, and 260 open issues, last pushed Sep 22, 2025. Figures are from public GitHub metadata via [CosyVoice's repository](https://github.com/FunAudioLLM/CosyVoice) and [kaldi's repository](https://github.com/kaldi-asr/kaldi). | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [kaldi](/tools/kaldi-asr-kaldi.md) | | --- | --- | --- | | Tagline | Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment. | Kaldi Speech Recognition Toolkit | | Stars | 22,870 | 15,442 | | Forks | 2,631 | 5,355 | | Open issues | 719 | 260 | | Language | Python | Shell | | 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. | Kaldi stands out among speech recognition toolkits with its comprehensive C++ libraries and strong community support for contributors. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Other | | 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) | [kaldi](/tools/kaldi-asr-kaldi.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Slowing (36%) | | Days since push | 89d | 310d | | Open issues (now) | 719 | 260 | | Stars delta | +497 (30d) | Unknown | | Open issues delta | -37 (30d) | Unknown | | Full report | [trust report](/tools/funaudiollm-cosyvoice/trust.md) | [trust report](/tools/kaldi-asr-kaldi/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: kaldi - **Adopt for:** Kaldi stands out among speech recognition toolkits with its comprehensive C++ libraries and strong community support for contributors. ## Choose when ### Choose CosyVoice if… - CosyVoice is primarily Python; kaldi is Shell. - License: CosyVoice is Apache-2.0, kaldi is Other. - 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 kaldi if… - kaldi is primarily Shell; CosyVoice is Python. - License: kaldi is Other, CosyVoice is Apache-2.0. - Tags unique to kaldi: c-plus-plus, cuda, speaker-id, speaker-verification. - For developers preferring a deep customization of speech recognition algorithms in C++ ## 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 kaldi - If you require extensive pre-built support and documentation for non-UNIX systems like Windows outside Cygwin environment - For users seeking a purely Python-based ecosystem for developing speech recognition applications without the need to compile C++ code ## Common questions ### What is the difference between CosyVoice and kaldi? CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. kaldi: Kaldi Speech Recognition Toolkit. See the comparison table for live GitHub stats and shared categories. ### When should I choose CosyVoice over kaldi? Choose CosyVoice over kaldi when CosyVoice is primarily Python; kaldi is Shell; License: CosyVoice is Apache-2.0, kaldi is Other; 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 kaldi over CosyVoice? Choose kaldi over CosyVoice when kaldi is primarily Shell; CosyVoice is Python; License: kaldi is Other, CosyVoice is Apache-2.0; Tags unique to kaldi: c-plus-plus, cuda, speaker-id, speaker-verification; For developers preferring a deep customization of speech recognition algorithms in C++. ### 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 kaldi? If you require extensive pre-built support and documentation for non-UNIX systems like Windows outside Cygwin environment For users seeking a purely Python-based ecosystem for developing speech recognition applications without the need to compile C++ code ### Is CosyVoice or kaldi more popular on GitHub? CosyVoice has more GitHub stars (22,870 vs 15,442). Stars measure visibility, not whether either tool fits your constraints. ### Are CosyVoice and kaldi open source? Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, kaldi: Other). ### Where can I find alternatives to CosyVoice or kaldi? GraphCanon lists graph-backed alternatives at [CosyVoice alternatives](/tools/funaudiollm-cosyvoice/alternatives) and [kaldi alternatives](/tools/kaldi-asr-kaldi/alternatives) ([CosyVoice markdown twin](/tools/funaudiollm-cosyvoice/alternatives.md), [kaldi markdown twin](/tools/kaldi-asr-kaldi/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-kaldi-asr-kaldi.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, CosyVoice or kaldi? CosyVoice: Steady. kaldi: Slowing. 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 kaldi? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [CosyVoice trust report](/tools/funaudiollm-cosyvoice/trust); [kaldi trust report](/tools/kaldi-asr-kaldi/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/_