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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 v2.1.45 17 Feb 2026

Extra Usage Billing Labels

What

Added clearer labels for when usage is billed as extra usage or at premium rates.

Details

Shows "Billed as extra usage" indicator for 1M context models when applicable
Shows "Billed at premium rate" for premium tier usage

Evidence

Billing label strings (search for "Billed as extra usage")

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

See this entry in the whole of v2.1.45 →