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fx vs Codewhale: catalog facts
fx	Codewhale
Free Free and open source under Apache-2.0.	Free Free and open source under the MIT licence; hosted model usage may cost extra.
Command line	Windows, macOS, Linux, Command line
Supports interactive sessions and one-off requests Works with local and cloud inference providers	Works with hosted or local models of your choice Can run tests to verify its own changes
Marked experimental, with frequent changes expected	Still at a 0.x pre-release version Most interface translations are only partial
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
Not stated if an account is 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 October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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