Subagents now inherit the parent's extended-thinking budget — stop under-powering delegated work

Claude Code Docs·medium signal

A July Claude Code change makes subagents and context compaction inherit the session's extended-thinking configuration, so delegated tasks get the same reasoning depth as the main agent instead of a shallow default. Subagents also now run in the background by default and notify on completion. Actionable: raise the parent session's thinking budget before dispatching hard subagent work, and rely on completion notifications instead of blocking on each one.