You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.232,
ImprovementsSection of the release
What
When Claude Code explains why a prompt cache was invalidated, it now prints hydrated baseline if the thing it compared against was reconstructed at startup rather than an actual earlier request, instead of naming a previous model or removed beta flags.
Evidence
hydrated baseline
Strings lifted out of the shipped bundle, so the claim above can be checked against them.