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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 v2.1.122 28 Apr 2026

Fast Mode Tag in Input Box Border

The input box border now displays a mode indicator tag (e.g. the model name and /fast toggle state) inline in the top-right corner of the border, replacing the previous approach. This is rendered by the new OZ5 component.

Evidence

New border tag component (search for fastModeTag in the OZ5 function at line ~629655)

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

See this entry in the whole of v2.1.122 →