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Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 10 Nov 2026
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Nearest release: v2.1.322, published 17 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 19:23 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 19:37 UTC.

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First seen 21 Aug 2026 this site's first read of the page
Recorded edits190to this page, all time

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446446Turn [fast mode](https://code.claude.com/docs/en/fast-mode.md) on for sessions where it's available, for interactive work such as rapid iteration or live debugging where you want speed at a higher cost per token. You don't usually edit this key yourself. Running `/fast` writes `fastMode: true` to `~/.claude/settings.json`, and running it again to turn fast mode off removes the key.
447447 
448Only Fable 5.2, Opus 5.5, Opus 5, and Opus 4.8 support fast mode. Running `/fast` from another model switches you to Opus, and switching to an unsupported model turns fast mode off. See [Switch models while fast mode is on](https://code.claude.com/docs/en/fast-mode.md#switch-models-while-fast-mode-is-on).
448On the Anthropic API, only Fable 5.2, Opus 5.5, Opus 5, and Opus 4.8 support fast mode. Running `/fast` from another model switches you to Opus, and switching to an unsupported model turns fast mode off. See [Switch models while fast mode is on](https://code.claude.com/docs/en/fast-mode.md#switch-models-while-fast-mode-is-on). On Google Cloud's Agent Platform, [`/fast` switches you to Fable 5.2](https://code.claude.com/docs/en/fast-mode#use-fast-mode-on-agent-platform) instead and doesn't write this key, and Claude Code ignores a saved `true`.
449449 
450450* **Scope**: [`Any file`](#scopes)
451451* **Type**: Boolean
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33383338By default, the transcript collapses each tool call to a short summary, such as the command Claude ran and a line count of its output, and you press `Ctrl+O` to switch the whole transcript to the expanded view when you want the details. Set this key to `true` to show every tool call's full input and output inline as it happens, which is useful when you're debugging a hook, an MCP server, or a long shell command. Appears in `/config` as **Verbose output**.
33393339 
3340* **Scope**: [`Any file`](#scopes). A value in `~/.claude.json` from an older version applies when no settings file sets it.
3341* **Type**: Boolean
3342 * `true`: you see full tool output
3343 * `false`: you see truncated summaries of tool output
3344* **Default**: `false`
3345* **Per-session overrides**: [`--verbose`](https://code.claude.com/docs/en/cli-reference#c
3340* **Scope**: [`Any file`](#scopes). A value in `~/.claude.json` from an older version applies when no settin
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