Compare software

SillyTavern vs HammerAI: catalog facts
SillyTavern	HammerAI
Free Free and open source under the AGPL. You pay only for whatever model backend you connect…	Freemium Chat is free with local and cloud models; paid plans are listed on the pricing page.
Windows, macOS, Linux, Self-hosted	iOS, Web
Deep prompt control: character cards, lorebooks, world info, author's notes and templates Connects to local runners as well as commercial APIs	Local models through Ollama in the desktop app Messages stored only on your computer by default
A front end only; you must supply a model backend Setup involves Node or Docker rather than an installer	Focused on roleplay rather than general productivity Desktop platforms supported are not stated on the homepage
Self-hosted	Downloadable app, Web application
Open source	Closed source
License: AGPL-3.0	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 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.