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DiffRhythm vs Udio: catalog facts
DiffRhythm	Udio
Free Free to download and run; the code and model are published on GitHub.	Freemium The fetched page did not list plans; check the site for current pricing and limits.
Linux, Command line	Web
Generates full-length songs rather than short clips Inference and training code published together	Generates music tracks in seconds Built-in discovery feed of shared music
Research code with no graphical application Needs a Python environment and suitable hardware	Runs only as an online service Current plan details and usage limits were not visible on the homepage
Downloadable app	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it 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 23, 2026

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