Claude Code's /fork now runs a background agent, not a copy

By Steven Van · 2026-06-06

The old copy-the-conversation behaviour moves to a new /branch command, Anthropic said on 6 June 2026.

Claude Code has changed what /fork does: it now spins up a background agent that inherits your exact context and prompt cache, rather than starting a fresh session. The previous /fork behaviour, branching off a copy of the conversation, is now available under /branch. Anthropic announced the change on 6 June 2026.

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