Claude Code v2.1.64 ·
Default Model Updated to Opus 4.6
EntryKind: in v2.1.64,
ChangesSection of the release
The model promotion banner now reads "Model updated to Opus 4.6" (previously "Opus 4.5"), reflecting the new default model.
Evidence
Model banner (search for "Opus 4.6")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
See this entry in the whole of v2.1.64 →