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Osaurus vs Msty: catalog facts
Osaurus	Msty
Free Free and open source; cloud models are billed by their providers through your own API…	Freemium A free tier of the desktop workspace is available. Larger workspace features require a…
macOS	Windows, macOS, Linux
Native inference engine for Apple Silicon Mixes local models and bring-your-own-key cloud models per agent	It runs local models without a separate server install and keeps chats, prompt libraries and attached knowledge bases…
macOS only for now Cloud models need your own paid API keys	The application is closed source, and the more capable workspace features sit behind a paid plan.
Downloadable app	Downloadable app
Open 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 October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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