--- title: "CosyVoice vs keras-tuner" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/funaudiollm-cosyvoice-vs-keras-team-keras-tuner" tools: ["funaudiollm-cosyvoice", "keras-team-keras-tuner"] --- # CosyVoice vs keras-tuner *GraphCanon updated Jul 12, 2026* ## Verdict Pick CosyVoice when tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt; pick keras-tuner when tags unique to keras-tuner: automl, deep-learning, hyperparameter-optimization, keras. [CosyVoice](https://funaudiollm.github.io/cosyvoice3) reports 22k GitHub stars, 2.5k forks, and 767 open issues, last pushed May 25, 2026. [keras-tuner](https://keras.io/keras_tuner/) has 2.9k stars, 404 forks, and 240 open issues, last pushed Dec 1, 2025. Figures are from public GitHub metadata via [CosyVoice's repository](https://github.com/FunAudioLLM/CosyVoice) and [keras-tuner's repository](https://github.com/keras-team/keras-tuner). | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [keras-tuner](/tools/keras-team-keras-tuner.md) | | --- | --- | --- | | Tagline | Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment. | A Hyperparameter Tuning Library for Keras | | Stars | 22,089 | 2,922 | | Forks | 2,545 | 404 | | Open issues | 767 | 240 | | 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 | Apache-2.0 | | Categories | Inference & Serving, Model Training, Speech & Audio | Model Training | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [CosyVoice](/tools/funaudiollm-cosyvoice.md) | [keras-tuner](/tools/keras-team-keras-tuner.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Slowing (36%) | | Days since push | 46d | 222d | | Open issues (now) | 767 | 240 | | Full report | [trust report](/tools/funaudiollm-cosyvoice/trust.md) | [trust report](/tools/keras-team-keras-tuner/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… - Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt. - Also covers Inference & Serving, Speech & Audio. - When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean. ### Choose keras-tuner if… - Tags unique to keras-tuner: automl, deep-learning, hyperparameter-optimization, keras. - Leaner open-issue backlog (240). ## 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 keras-tuner - Last GitHub push was 222 days ago (slowing maintenance, Dec 1, 2025). Validate activity before betting a new project on keras-tuner. - Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ## Common questions ### What is the difference between CosyVoice and keras-tuner? CosyVoice: Multi-lingual large voice generation model with full-stack abilities for inference, training and deployment.. keras-tuner: A Hyperparameter Tuning Library for Keras. See the comparison table for live GitHub stats and shared categories. ### When should I choose CosyVoice over keras-tuner? Choose CosyVoice over keras-tuner when Tags unique to CosyVoice: audio-generation, cantonese, chatbot, chatgpt; Also covers Inference & Serving, Speech & Audio; When you need support for multiple languages like Cantonese, Chinese, English, Japanese, and Korean. ### When should I choose keras-tuner over CosyVoice? Choose keras-tuner over CosyVoice when Tags unique to keras-tuner: automl, deep-learning, hyperparameter-optimization, keras; Leaner open-issue backlog (240). ### 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 keras-tuner? Last GitHub push was 222 days ago (slowing maintenance, Dec 1, 2025). Validate activity before betting a new project on keras-tuner. Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ### Is CosyVoice or keras-tuner more popular on GitHub? CosyVoice has more GitHub stars (22,089 vs 2,922). Stars measure visibility, not whether either tool fits your constraints. ### Are CosyVoice and keras-tuner open source? Yes - both are open-source projects on GitHub (CosyVoice: Apache-2.0, keras-tuner: Apache-2.0). ### Where can I find alternatives to CosyVoice or keras-tuner? GraphCanon lists graph-backed alternatives at [CosyVoice alternatives](/tools/funaudiollm-cosyvoice/alternatives) and [keras-tuner alternatives](/tools/keras-team-keras-tuner/alternatives) ([CosyVoice markdown twin](/tools/funaudiollm-cosyvoice/alternatives.md), [keras-tuner markdown twin](/tools/keras-team-keras-tuner/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-keras-team-keras-tuner.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, CosyVoice or keras-tuner? CosyVoice: Steady. keras-tuner: 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 keras-tuner? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [CosyVoice trust report](/tools/funaudiollm-cosyvoice/trust); [keras-tuner trust report](/tools/keras-team-keras-tuner/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/_