From 0b3f7cbbbd8c0e78c4bb63134ead608c555df5de Mon Sep 17 00:00:00 2001
From: GitHub Actions <actions@github.com>
Date: Wed, 4 Mar 2026 10:10:30 +0000
Subject: [PATCH] chore: Update CHANGELOG.md

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 610ca17..ee93589 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # 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