Compare software

IndexTTS vs Chatterbox: catalog facts
IndexTTS	Chatterbox
Free Free to download and run from the GitHub repository.	Free Free and open source under the MIT license.
Command line	Windows, macOS, Linux, Command line
Zero-shot voice cloning from a reference sample Control over emotion and duration	Zero-shot voice cloning from a very short audio sample MIT licensed for unrestricted local use
Requires a Python setup and suitable hardware License terms need checking before commercial use	Generation quality and speed depend on available local hardware No dedicated GUI application, mainly used through code
Downloadable app	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License: MIT
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.