The automatic migration that silently set Opus 4.6 effort to "medium" has been removed.
- Previously, on startup, the app would set
opus46EffortMediumMigrationTimestampand briefly flash "Opus 4.6 effort updated to medium" - This silent migration has been completely removed — effort is no longer changed behind the scenes
- Default effort for Opus 4.6 is now determined by feature flags (
tengu_quartz_falcon,tengu_grey_step2) rather than a one-time migration
Removed migration function (search for "opus46EffortMediumMigrationTimestamp" — present in v2.1.67, absent in v2.1.68)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
tengu_grey_step2 Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.68: no gate table built for this version
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.68. It isn't a statement about your account. What a flag value here can and cannot tell you
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.