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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.300 ·

A check on whether the arbiter classifier can be used, with a retired-beta reason

Claude Code has a check that can rule out the arbiter classifier, either because a mode doesn't use it or because its beta is retired

Under the hood Internal Changes
JSON All of v2.1.300
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Auto ModeArea: what it touches
Internal ChangesKind: in v2.1.300,
What probably matters to youSection of the release

Unclear Where this check is used, and so whether it changes anything a user of auto mode sees, is not known.

What

In auto mode, a classifier (a model that judges whether an action should go ahead) can be used to decide on actions. Claude Code now includes a check on whether a mode can use the classifier in its "arbiter" role. The check can refuse for either of two reasons:

  • The mode's classifier role is not arbiter.
  • The arbiter beta has been retired, judged by a separate check on the mode.

If the check gives no reason, the mode counts as eligible.

Why

In practice, a mode can now be treated as unable to use the arbiter classifier with the stated reason that the arbiter beta has been retired.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhere this check is used, and so whether it changes anything a user of auto mode sees, is not known.

See this entry in the whole of v2.1.300 →

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