Model-switch rejections now check a notOffered flag to tell apart two cases: a model that simply isn't offered versus one disabled by org policy. The former now returns a distinct not_offered reason and telemetry event, so users get a more accurate explanation for why the switch didn't happen.
Model-switch-disabled responses can now distinguish 'not offered' from 'disabled by org'
A refused model switch now distinguishes a model that simply is not offered from one disabled by org policy.
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ModelsArea: what it touches
ImprovementsKind: in v2.1.257,
ImprovementsSection of the release