Claude Code v2.1.68

March 4, 2026

Summary

- 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...

Release Notes

- 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

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Other Recent Claude Code Releases

• v2.1.158 (May 30, 2026)
• v2.1.157 (May 29, 2026)
• v2.1.156 (May 28, 2026)
• v2.1.154 (May 28, 2026)
• v2.1.153 (May 27, 2026)

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