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IndexTTS vs Zonos: catalog facts
IndexTTS	Zonos
Free Free to download and run from the GitHub repository.	Free Free open-weight model and code.
Command line	Linux, Self-hosted
Zero-shot voice cloning from a reference sample Control over emotion and duration	Voice cloning from a short reference sample Trained on over 200k hours of multilingual speech
Requires a Python setup and suitable hardware License terms need checking before commercial use	Needs Python setup and a capable GPU for comfortable speed Early v0.1 release with a small commit history
Downloadable app	Downloadable app, Self-hosted
Closed source	Open source
License not stated	License: Apache-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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