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  5. MMLU
Evaluation & Benchmarksaka Massive Multitask Language Understanding

MMLU

MMLU is a benchmark that tests language models with multiple-choice questions drawn from many academic and professional subjects.

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A model selects answers under a specified zero-shot or few-shot prompt, and accuracy is aggregated across subjects. The score measures performance on this question format, not general intelligence or deployment reliability.

Related terms

Confusion MatrixAI BenchmarkHumanEvalSWE-benchEEBenchGSM8K

Where MMLU comes up

  • AI Benchmarks in 2026: The Complete Guide to MMLU, GPQA, SWE-bench, and Beyond
  • Goodhart’s Law Comes for Every Benchmark You Trust: The 2026 Receipts
  • How to Read an AI Benchmark and Not Get Fooled
  • Ethan Mollick: Prompting Tricks Are Over — Wharton Prompting Science Backs Real Specs