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 v2.1.282,
ImprovementsSection of the release
What
On Google Vertex, two checks were rewritten: whether the WebSearch tool is available, and whether a beta request header is sent. Both now use one shared check against claude-opus-4-0. Before, WebSearch matched a fixed set of model-name patterns, and the beta header used a fixed list of model IDs.
Why
The set of Vertex models that get WebSearch and the beta header may be different from before, possibly including models that were not on the old lists.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtExactly which Vertex models the new check lets through is not known.
