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SillyTavern vs Chai: catalog facts
SillyTavern	Chai
Free Free and open source under the AGPL. You pay only for whatever model backend you connect…	Freemium Free to download, with revenue from paid use inside the app.
Windows, macOS, Linux, Self-hosted	Android, iOS
Deep prompt control: character cards, lorebooks, world info, author's notes and templates Connects to local runners as well as commercial APIs	Large catalog of community-made characters Users can create their own characters and stories
A front end only; you must supply a model backend Setup involves Node or Docker rather than an installer	Mobile only Aimed at entertainment and companionship, not productivity
Self-hosted	Downloadable app
Open source	Closed source
License: AGPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Needs internet
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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