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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
One change · claude-code

Model configuration changed

model-config

Nearest release: v2.1.268, published under an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

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Lines−2removed
From line 563 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits40to this page, all time

The whole hunk

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564564The persisted `effortLevel` setting and the `CLAUDE_CODE_EFFORT_LEVEL` environment variable don't accept `ultracode`. When `CLAUDE_CODE_EFFORT_LEVEL` is set to a level other than `xhigh`, requests run at that level and ultracode's workflow orchestration stays inactive. Selecting ultracode then shows a warning that the environment variable overrides effort for the session.
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566When ultracode isn't available, for example when [workflows are turned off](/docs/en/workflows#turn-workflows-off), `--effort ultracode` sets `xhigh` effort only.
566<span id="when-ultracode-is-available" />
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568Ultracode is unavailable when:
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570* [Workflows are turned off](/docs/en/workflows#turn-workflows-off)
571* The model doesn't support `xhigh` effort
572* An [effort cap](#organization-effort-limits) below `xhigh` applies to the model
573 
574In those cases `--effort ultracode` starts the session with ultracode off, at the highest effort level the model and any cap allow, up to `xhigh`.
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568576#### Choose an effort level
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570578Each level trades token spend against capability. The default suits most coding tasks; adjust when you want a different balance.
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596604* **From a connected device**: in a [Remote Control](/docs/en/remote-control#what-connected-devices-see) session, pick a level from the effort control on your phone or in your browser. The level applies to the current session only, though it also ends the [hold on the model's default effort](#adjust-effort-level). Requires Claude Code v2.1.234 or later
597605* **Skill and subagent frontmatter**: set `effort` in a [skill](/docs/en/skills#frontmatter-reference) or [subagent](/docs/en/sub-agents#supported-frontmatter-fields) markdown file to override the effort level when that skill or subagent runs
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599Frontmatter effort applies when that skill or subagent is active, overriding the session level but not the environment variable.
607Frontmatter effort applies when that skill or subagent is active, overriding the session level but not the environment variable. A [`maxEffortLevel`](/docs/en/settings-reference#maxeffortlevel) or [organization effort cap](#organization-effort-limits) still limits the level the skill or subagent runs at.
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601609On Fable 5, Opus 4.8, and Opus 4.7, frontmatter effort also applies while the [hold on the model's default effort](#adjust-effort-level) is in effect. Before v2.1.267, the hold took precedence and Claude Code ignored the frontmatter level while the hold was active.
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