Custom Vertex AI model IDs are now validated up front and rejected with an explicit error message if they contain /, \, ?, #, %, or whitespace, instead of only checking for the claude- prefix.
Vertex model IDs now validated for illegal characters
Custom Vertex model IDs are now validated for illegal characters up front.
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Bug FixesKind: in v2.1.260,
Bug FixesSection of the release