[Release] anthropics/claude-code v2.1.68: v2.1.68

Claude Code v2.1.68 updates Opus 4.6 to default to medium effort for Max and Team subscribers, reintroduces the 'ultrathink' keyword for enabling high effort, and removes Opus 4 and 4.1 from the first-party API with automatic migration to Opus 4.6.

Key Points

• •Opus 4.6 now defaults to medium effort for Max and Team subscribers, balancing speed and thoroughness
• •Medium effort is positioned as the optimal setting for most tasks and use cases
• •Users can customize effort level anytime using the `/model` command
• •The 'ultrathink' keyword has been re-introduced to enable high effort mode for individual turns
• •Opus 4 and 4.1 models have been removed from Claude Code on the first-party API
• •Users with pinned Opus 4 or 4.1 models are automatically migrated to Opus 4.6
• •This update streamlines model selection and improves default performance for the majority of users

Workflow Diagram

Concepts