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 # Changelog
 
+## 2.1.68
+
+- Opus 4.6 now defaults to medium effort for Max and Team subscribers. Medium effort works well for most tasks — it's the sweet spot between speed and thoroughness. You can change this anytime with `/model`
+- Re-introduced the "ultrathink" keyword to enable high effort for the next turn
+- Removed Opus 4 and 4.1 from Claude Code on the first-party API — users with these models pinned are automatically moved to Opus 4.6
+
 ## 2.1.66
 
 - Reduced spurious error logging