A simple time zone calculation that elementary school students can solve exposed the shocking reality: over half of top AI models failed completely, and none recognized that March 15th falls during US Daylight Saving Time.
When given the same engineering judgment question, Doubao Pro scored perfect 100 while 8 major AI models including Claude and GPT-4o scored 0, revealing a stark divide in practical problem-solving abilities.
Grok 3's logic reasoning score collapsed from 100 to 0 in the latest YZ Index evaluation, exposing a systemic failure in the model's reasoning capabilities despite improvements in other areas.
