Speed up responses with fast mode changedfast-mode
Nearest release: v2.1.322, published 15 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 10 Nov 2026 17:13 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 10 Nov 2026 17:37 UTC.
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6464Whenever a model switch turns fast mode on or off, Claude Code shows a `Fast mode ON` or `Fast mode OFF` confirmation, and the `↯` icon appears while fast mode is on. This holds whether you switch with `/model`, with [`/config model=<model>`](https://code.claude.com/docs/en/settings), or from a device connected through [Remote Control](https://code.claude.com/docs/en/remote-control.md).
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66Claude Code resends the session's fast mode status to devices connected through Remote Control after a model switch, a reconnection, or a failed [availability check](#use-fast-mode-behind-proxies-and-llm-gateways).
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6866### Use fast mode in cloud sessions
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7068Fast mode works in [cloud sessions](https://code.claude.com/docs/en/claude-code-on-the-web.md) when it's available on your account, whether the session runs on Anthropic-managed infrastructure or a [self-hosted runner](https://code.claude.com/docs/en/self-hosted-environments). Requires Claude Code v2.1.271 or later in the session's environment.
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