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Summary
GPT-5 (high) from OpenAI scored 21.4 on Humanity's Last Exam, placing it top 10 (rank 6 of 97) on this benchmark. This places the model in the weak band for Humanity's Last Exam. Below the threshold for production reliance on this benchmark family. Consider only for narrow, fully-tested tasks.
Model details
- Provider: OpenAI
- Model key:
openai/gpt-5-high - Context length: 400,000 tokens
- License: Proprietary
- Open weights: no
Benchmark methodology
Secondary metrics
- Readability score: 53.2
- Toxicity score: 0.001
- Ethics score: 0.000
Run this evaluation yourself
LayerLens evaluates GPT-5 (high) continuously across 11+ benchmarks. To replicate this Humanity's Last Exam evaluation on your own model, traces, or a different benchmark configuration, open the model in $LayerLens/$.
Source: LayerLens evaluation 68ffb622d90dfc27d9963dbd. Updated 2025-10-30.