Adding a zoom tool made Claude worse: it was inspecting every pixel via code

Flomerboy · x · 2026-09-13

While building Claude Design, the author added a "zoom in" tool to improve Claude's vision — and performance actually dropped on newer models. On inspection, the cause: Claude was writing programs to examine every individual pixel. A vivid first-hand example of models solving problems in unexpected ways, even turning a helpful tool into a hindrance.

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