LaunchDevelopersAugust 28, 2026

Claude Code v2.1.251 adds model switch hooks and subagent streaming

Claude Code v2.1.251 adds PreModelSwitch and PostModelSwitch hook events to block, confirm, or annotate model switches, plus live streaming of foreground subagent tool calls to Remote Control clients.

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Claude Code v2.1.251 adds model switch hooks and subagent streaming