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Witsy vs Kai 9000: catalog facts
Witsy	Kai 9000
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under Apache-2.0; cloud providers may charge for their own API keys.
Windows, macOS, Linux	Windows, macOS, Linux, Android, iOS, Web
Works with local model servers as well as cloud APIs.	Works with many AI providers and falls back between them automatically Offline Gemma 4 models on Android and desktop
Cloud connections require your own provider credentials.	Cloud providers need your own API keys Background autonomy and shell access need careful configuration
Downloadable app	Downloadable app, Web application
Open source	Open source
License: AGPL-3.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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