Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ModelsArea: what it touches
ImprovementsKind: in v2.1.219,
ImprovementsSection of the release
What
The check for why Fast mode is unavailable now returns a code rather than an English sentence, with a separate function that turns the code into the user-facing text.
Details
Codes include not_first_party, disabled_by_env, model_not_allowed, sdk_opt_in_required, pending, plus server-supplied reasons such as extra_usage_disabled.
Telemetry gains a fast_mode_disabled_reason field with a schema enum for the codes.
The org-status cache records provenance as source: "guess" or source: "server", and only emits a change event when the value or the reason actually changed.
Evidence
sdk_opt_in_required
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
