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IndexTTS vs Orpheus TTS: catalog facts
IndexTTS	Orpheus TTS
Free Free to download and run from the GitHub repository.	Free Free to download and run yourself.
Command line	Command line
Zero-shot voice cloning from a reference sample Control over emotion and duration	Emotion tags for expressive speech Realtime streaming example included
Requires a Python setup and suitable hardware License terms need checking before commercial use	No packaged desktop app; needs a Python setup Multilingual models are a research preview
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 26, 2026

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