AI’s 2,500-Question Gauntlet Tests the Real Limits of Machine Intelligence

Researchers unveiled Humanity’s Last Exam (HLE), a 2,500-question global benchmark spanning math, the humanities, science, and niche disciplines to probe AI's true limits beyond older tests. Early models scored very low and even recent top systems reach roughly 40–50%, highlighting that high scores on human benchmarks don’t guarantee genuine understanding. Designed as a long-term, transparent gauge, HLE helps policymakers and developers assess capabilities and risks while keeping most questions hidden to prevent memorization; the project includes international experts including Texas A&M’s Dr. Tung Nguyen and is described in a Nature paper with details at lastexam.ai.