chore: Update CHANGELOG.md

2026-05-09 08:32:40 +00:00 · 2026-03-04 10:10:30 +00:00 · 2026-03-04 02:23:29 +00:00 · 2026-03-04 01:18:30 +00:00 · 2026-03-02 16:38:29 +00:00
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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
+
 ## 2.1.63

 - Added `/simplify` and `/batch` bundled slash commands
Author	SHA1	Message	Date
GitHub Actions	0b3f7cbbbd	chore: Update CHANGELOG.md	2026-03-04 10:10:30 +00:00
GitHub Actions	a8335230bc	chore: Update CHANGELOG.md	2026-03-04 02:23:29 +00:00
GitHub Actions	9c63e985f6	chore: Update CHANGELOG.md	2026-03-04 01:18:30 +00:00
Octavian Guzu	38281cfd46	Merge pull request #30066 from anthropics/oct/gh-wrapper-improvements Improve gh.sh wrapper: stricter validation and better error messages	2026-03-02 16:38:29 +00:00