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HomeDocsClaude Code CLI 7 Oct 2026
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Nearest release: v2.1.293, 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 7 Oct 2026 17:51 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 7 Oct 2026 17:56 UTC.

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9494 Auto mode availability
9595</h4>
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97Auto mode is available to all users on the Anthropic API and requires Claude Opus 4.6 or later, Sonnet 4.6 or later, or a [Fable model](/docs/en/model-config#work-with-fable). Organization administrators can turn auto mode off with the `disableAutoMode` key in [managed settings](#managed-settings).
97Auto mode is available to all users on the Anthropic API and requires Claude Opus 4.6 or later, Sonnet 4.6 or later, Haiku 5.5, or a [Fable model](/docs/en/model-config#work-with-fable). Organization administrators can turn auto mode off with the `disableAutoMode` key in [managed settings](#managed-settings).
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9999In Enterprise deployments that route Desktop to Google Cloud's Agent Platform, auto mode is also available by default; see [Auto mode on Bedrock, Agent Platform, or Foundry](/docs/en/permission-modes#enable-auto-mode-on-bedrock-agent-platform-or-foundry) for the supported models.
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650650To set environment variables for local sessions and dev servers on any platform, open the environment dropdown in the prompt box, hover over **Local**, and click the gear icon to open the local environment editor. Variables you save here are stored encrypted on your machine and apply to every local session and preview server you start. You can also add variables to the `env` key in your `~/.claude/settings.json` file, though these reach Claude sessions only and not dev servers. See [environment variables](/docs/en/env-vars) for the full list of supported variables.
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652[Extended thinking](/docs/en/model-config#extended-thinking) is enabled by default, which improves performance on complex reasoning tasks but uses additional tokens. On the Anthropic API, set `MAX_THINKING_TOKENS` to `0` in the local environment editor to turn thinking off; this has no effect on Opus 5.5, Sonnet 5.5, or the Fable models, which always use extended thinking. With thinking turned off on the Anthropic API, Claude Code sends effort `high` instead of a higher level to models it knows [don't accept that combination](/docs/en/errors#effort-isnt-available-with-thinking-turned-off), such as Opus 5.
652[Extended thinking](/docs/en/model-config#extended-thinking) is enabled by default, which improves performance on complex reasoning tasks but uses additional tokens. On the Anthropic API, set `MAX_THINKING_TOKENS` to `0` in the local environment editor to turn thinking off; this has no effect on Opus 5.5, Sonnet 5.5, Haiku 5.5, or the Fable models, which always use extended thinking. With thinking turned off on the Anthropic API, Claude Code sends effort `high` instead of a higher level to models it knows [don't accept that combination](/docs/en/errors#effort-isnt-available-with-thinking-turned-off), such as Opus 5.
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654On models with [adaptive reasoning](/docs/en/model-config#adjust-effort-level), Claude Code ignores the number itself in a positive `MAX_THINKING_TOKENS` value because adaptive reasoning controls thinking depth instead. On Opus 4.6 and Sonnet 4.6, set `CLAUDE_CODE_DISABLE_ADAPTIVE_THINKING` to `1` to use a fixed thinking budget; Fable models, Sonnet 5 and later, and Opus 4.7 and later always use adaptive reasoning and have no fixed-budget mode.
654On models with [adaptive reasoning](/docs/en/model-config#adjust-effort-level), Claude Code ignores the number itself in a positive `MAX_THINKING_TOKENS` value because adaptive reasoning controls thinking depth instead. On Opus 4.6 and Sonnet 4.6, set `CLAUDE_CODE_DISABLE_ADAPTIVE_THINKING` to `1` to use a fixed thinking budget; Fable models, Sonnet 5 and later, Haiku 5.5, and Opus 4.7 and later always use adaptive reasoning and have no fixed-budget mode.
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656656#### Local sessions on managed devices
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