Run agents in parallel changedagents
Nearest release: v2.1.304, published 6 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 20 Oct 2026 02:25 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 20 Oct 2026 02:37 UTC.
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2525* A [background bash command](/docs/en/interactive-mode#background-bash-commands) runs one shell command without blocking the conversation. It doesn't spawn an agent.
2626* A [forked subagent](/docs/en/sub-agents#fork-the-current-conversation) is a subagent that inherits your full conversation context instead of starting fresh. It's a way to spawn a subagent, not a separate surface. Start one with `/subtask`. Claude also spawns one itself where [fork mode](/docs/en/sub-agents#turn-fork-mode-on-or-off) is on. To copy the whole session into a new [background session](/docs/en/agent-view#from-inside-a-session) that runs alongside it, use `/fork`. With [agent view turned off](/docs/en/agent-view#turn-off-agent-view), the forked-subagent command is `/fork` instead and `/subtask` isn't available.
27* A [routine](/docs/en/routines) runs a session on a schedule in the cloud, not in parallel on your machine.
27* A [cloud scheduled task](/docs/en/routines) runs a session on a schedule in the cloud, not in parallel on your machine.
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2929<Note>
3030 Running several sessions or subagents at once multiplies token usage. See [Costs](/docs/en/costs) for usage and rate-limit details.
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