# Humanity’s Last Exam

Humanity’s Last Exam is an AI benchmark; this page records what it measures and traces its data, grader, and scores to primary sources.

Tests frontier models on expert-written, multimodal questions spanning mathematics, science, and the humanities.

## Details

- Address: Online, Global
- Website: [lastexam.ai/](<https://lastexam.ai/>)
- Tags: Viral, Science
- Category: Reasoning
- Status: Active
- Data licence: MIT
- Data access: open
- Grader: mixed
- Organization: Center for AI Safety
- Released: 2025-01
- Paper: [arxiv.org/abs/2501.14249](<https://arxiv.org/abs/2501.14249>)
- Leaderboard: [agi.safe.ai/dashboard](<https://agi.safe.ai/dashboard>)
- Repository: [github.com/centerforaisafety/hle](<https://github.com/centerforaisafety/hle>)
- Task count: 2,500
- Top-score provenance: unknown
- ABI family: No

## Questions

### Where is Humanity’s Last Exam?

Humanity’s Last Exam is at Online, Global.

### How do I contact Humanity’s Last Exam?

To contact Humanity’s Last Exam, visit https://lastexam.ai/.

## Source

From [Benchmark primary sources](https://aibenchmarkindex.com/about), license CC0-1.0, checked 2026-10-15.

Last updated October 15, 2026.

## Links

- This benchmark on the [web page](<https://aibenchmarkindex.com/global/online/humanitys-last-exam>)
- [Reasoning in Online](<https://aibenchmarkindex.com/global/online/category/reasoning.md>)
- [More benchmarks in Online](<https://aibenchmarkindex.com/global/online.md>)

> **Check before you compare.** Benchmark methods and leaderboards change. Follow the cited primary source before using a result in a decision.