CosyVoice: audio generator — what it does and what you need to run it

CosyVoice is an open source speech generator from Alibaba. It solves the text-to-speech task: converting text into audible speech. The authors describe it as a multilingual voice generation model that provides capabilities for inference, training, and deployment.

What it does

As described by the author, CosyVoice is a multilingual voice generation model. The repository tags list the following languages: Chinese, Cantonese, English, Japanese, and Korean. Cross-lingual generation and voice cloning are also claimed to be supported.

The authors note that the model provides a full stack: inference, training, and deployment. The repository tags mention fine-tuning and fine-tuning.

What you need to run it

The code is written in Python. The repository is open source, and the code license is Apache-2.0. The model weights are also distributed under the Apache-2.0 license.

The total size of the weight files is 0.9 GB, with the largest weight file being 0.9 GB. The authors do not specify requirements for GPU, system RAM, or a specific operating system.

The repository was created on July 3, 2024, with the latest code change on May 25, 2026.

Who it is for

CosyVoice suits those looking for an open source text-to-speech model with support for multiple languages and voice cloning capabilities. The Apache-2.0 license on both code and weights allows using the model in your own projects.

The model is not suitable for those who need a ready-made commercial platform with support and guarantees: here, everything must be deployed on your own. Also, the authors do not specify system requirements, so you should check whether your hardware is sufficient before running it.

CosyVoice is an open source tool for speech synthesis that has been evolving since 2024. It provides access to multilingual generation and voice cloning but requires self-setup and self-deployment.