The Ginkgo Leaf Test: Most AI Models Botch Parallel Veins, Gemini 4 Carbon Nails It
every · x · 2026-11-15
A clever vibe-check trick: ask models to draw a ginkgo leaf app icon, whose veins are parallel rather than branching. Several models kept drawing branching veins, but Gemini 4 Carbon got the leaf's structure right and placed the icon on Apple's grid of proportions, while others went too abstract or missed the parallel ribbing — earning it a spot in the author's shortlist for his next app icon.
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