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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Home Docs Claude Code CLI 22 Sep 2026
One change · claude-code

Speed up responses with fast mode changed

fast-mode

Nearest release: v2.1.280, published under an hour 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 22 Sep 2026 16:44 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 22 Sep 2026 16:47 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits11to this page, all time

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2323 
2424In the CLI, toggle fast mode in either of these ways:
2525 
26* Type `/fast` and press Tab to toggle on or off
26* Run `/fast`, press Space to toggle on or off, then press Enter to confirm
2727* Set `"fastMode": true` in your [user settings file](/docs/en/settings)
2828 
2929By default, fast mode you turn on in an interactive session persists across sessions. You can configure fast mode to reset each session. See [require per-session opt-in](#require-per-session-opt-in) for details.