Claude Code v2.1.39 ·
Terminology Update: Penguin Mode → Fast Mode
EntryKind: in v2.1.39,
ChangesSection of the release
Internal references to "penguin mode" have been renamed to "fast mode" for consistency with user-facing terminology.
Evidence
Renamed status messages (search for "Org fast mode:" vs old "Org penguin mode:")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
See this entry in the whole of v2.1.39 →
