BIG-Bench Extra Hard

BIG-Bench Extra Hard (BBEH) is an extremely challenging benchmark designed to push the boundaries of LLM reasoning evaluation beyond current capabilities. Featuring the most difficult tasks that consistently challenge state-of-the-art models, it tests advanced reasoning, complex problem-solving, and sophisticated cognitive abilities. BBEH serves as a frontier evaluation tool for measuring progress toward more capable AI systems that can handle the most demanding intellectual challenges.