Back to Journal2026-04-05
Research

"Humanity's Last Exam": The Benchmark That Proves AI is Still Stupid

MMLU is solved. GSM8K is a joke. 'Humanity's Last Exam' is the new wall, and it's proving that for all the hype, our 'God-like' AI models are still just parroting textbooks.

"Humanity's Last Exam": The Benchmark That Proves AI is Still Stupid

The Wall: Why 15% is the New 100%

MMLU is solved. GSM8K is trivial. So researchers created 'Humanity's Last Exam' (agi.safe.ai). It's a collection of the hardest questions from every field—quantum mechanics, ancient history, abstract topology—designed to be un-googleable. And guess what? It's humiliating the industry.

Current SOTA models (R1, O3, Claude 3.7) are scoring around 15%. For context, a PhD in the specific field scores around 80%. This gap proves that while AI is broad, it is shallow. It can pass the bar exam because the bar exam is memorization. It can't invent a new legal theory because that requires reasoning.

Memorization vs. Reasoning: The Great Deception

The public has been duped. We see a model solve a riddle and think 'AGI'. But 'Humanity's Last Exam' exposes the truth: these models are just really good at pattern matching. When faced with a novel problem that requires multi-step deduction without a training data template, they fall apart. They hallucinate. They guess. They fail.

# The Reality of 'Reasoning' Models
def solve_novel_problem(problem):
    if problem in training_data:
        return exact_answer
    else:
        return plausible_sounding_nonsense()

The Real Definition of AGI

This benchmark is the new finish line. When a model scores 90% on this exam, we can officially pack it up. Until then, anyone claiming 'AGI is here' is selling you a bridge or a wrapper. We aren't there yet, and the curve is flattening, not vertical.

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About this post

What is Humanity's Last Exam?

A benchmark designed by the Center for AI Safety (CAIS) and Scale AI to be impossible for current LLMs, focusing on abstract reasoning and novel problem solving.

Why do models fail it?

Because the questions can't be solved by pattern matching or memorization. They require genuine synthesis of concepts, which LLMs still struggle with.

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