Claude Code moves old /fork behavior into /subtask and makes /fork spawn background sessions
EricBuess · x · 2026-08-04
Claude Code has changed how /fork works: it now copies your session into a new background session while you keep working in the current one.
The old behavior — an in-session subagent that reports back — has been moved to /subtask.
The accompanying diagram contrasts the two flows: /fork preserves the current thread and spins up a background branch, while /subtask launches a subagent and returns a final result notification.
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