Claude Code update: preserved thinking and model setting changes

Preserved thinking changes how the Messages API handles thinking blocks to protect against distillation. The model, effort, and thinking settings have been changed.

Official: https://support.claude.com/en/articles/12138966-release-notes

Did Claude Code reset today? Live status: https://quotatick.com/en/did-claude-code-reset-today

Did this change anything for your Claude Code usage? Reply with your plan and what you noticed.