{"version":"2.1.68","anchor":"removed-silent-medium-effort-auto-migration","canonical_anchor":"removed-silent-medium-effort-auto-migration","heading":"Removed silent medium-effort auto-migration","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.68\/e\/removed-silent-medium-effort-auto-migration","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.68","markdown":"### Removed silent medium-effort auto-migration\n\nThe automatic migration that silently set Opus 4.6 effort to \"medium\" has been removed.\n\n**Details**\n\n- Previously, on startup, the app would set `opus46EffortMediumMigrationTimestamp` and briefly flash \"Opus 4.6 effort updated to medium\"\n- This silent migration has been completely removed \u2014 effort is no longer changed behind the scenes\n- Default effort for Opus 4.6 is now determined by feature flags (`tengu_quartz_falcon`, `tengu_grey_step2`) rather than a one-time migration\n\n**Evidence**\n\nRemoved migration function (search for `\"opus46EffortMediumMigrationTimestamp\"` \u2014 present in v2.1.67, absent in v2.1.68)\n\n- Flag `tengu_grey_step2`: Not enough to say (read for one account on one subscription tier against v2.1.68; this account: no value returned, anonymous baseline: no value returned, compiled default: 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."}