Side by side

Chatterbox TTS vs CosyVoice

Both stand on text-to-speech tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Chatterbox TTS

Free plan Open source APILinuxMac+2

Chatterbox offers several open-source model choices, with documented installation paths and device options. Generated files carry a PerTh watermark, and Resemble says its voice generation is no longer a commercial product.

Visit Chatterbox TTS

CosyVoice

Free plan APILinuxSelf-hosted

CosyVoice offers multilingual speech synthesis, voice cloning, and several documented deployment paths as free software. Its self-managed setup and stated intended use are worth considering before adopting it.

Visit CosyVoice

The facts

	Chatterbox TTS	CosyVoice
Free plan	Yes	Yes
Open source	Yes	Not published
Runs on	API, Linux, Mac, Self-hosted, Windows	API, Linux, Self-hosted
Lowest paid plan	Free or on request	Free or on request
Plans published	2	1
Maker	Chatterbox TTS	Not published
Website	github.com	github.com
On text-to-speech tools	#2 of 232	#35 of 232

Chatterbox TTS: what it does well

MIT-licensed models are free for research and development
Multilingual model lists 23 supported languages
Turbo accepts tags for vocal reactions
Voice cloning and WAV export are supported
CUDA, CPU, and MPS device options are listed

What to know first

Generated audio includes a PerTh watermark
Resemble no longer offers voice generation commercially
The README describes development with Python 3.11 on Debian 11

CosyVoice: what it does well

Free and Apache License 2.0 licensed.
Supports voice cloning and nine languages.
Provides text-in, audio-out streaming.
Offers FastAPI and gRPC deployment interfaces.
Supports WAV output.

What to know first

Installation uses Python 3.10.
Installation and deployment are self-managed.
Content is described as intended for academic purposes and demonstrating capabilities.

Alternatives to Chatterbox TTS Alternatives to CosyVoice The whole list