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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.227

Switching models checks your organization's entitlement first

You'll notice
Useful4 Signal3
Models

Switching models now checks your organization's entitlement live and refuses if it can't confirm.

What

Choosing a model now forces a server-side entitlement check instead of trusting cached access. If the check denies the model or cannot be completed, the switch is refused with the organization-restriction message rather than silently proceeding.

Details
  • Failures are recorded against model_switch with the reason denied_by_entitlement or entitlement_probe_failed.
  • A successful switch prunes models you are no longer entitled to out of the saved modelAccessCache.
Evidence

denied_by_entitlement

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.227 →