Extended Thinking being deprecated for supported models (Opus 4.6, Sonnet 4.6); Adaptive Thinking will be enforced by default (opens in new tab)

# Building with extended thinking --- This feature is eligible for Zero Data Retention (ZDR). When your organization has a ZDR arrangement, data sent through this feature is not stored after the API response is returned. Extended thinking gives Claude enhanced reasoning capabilities for complex tasks, while providing varying levels of transparency into its step-by-step thought process before it delivers its final answer. For Claude Opus 4.7, use adaptive thinking (`t...