HLE Extended

Name: HLE Extended
Creator: Mercor

Frontier multi-disciplinary academic knowledge.

447Mercor tasks

2,158Public tasks

77.3%Highest score

The HLE Extended leaderboard

Tests models on 2,158 frontier-level, closed-ended academic questions requiring genuine subject mastery rather than retrieval.

Model

Score

GPT-5.6 SolMax • Pro

Score on this Mercor-extended benchmark: 77.3%

GPT-5.6 TerraMax

Score on the original open-source benchmark: 44.9% / Score on this Mercor-extended benchmark: 70.7%

Opus 5High

Score on the original open-source benchmark: 52.0% / Score on this Mercor-extended benchmark: 61.0%

Fable 5High

Score on the original open-source benchmark: 51.5% / Score on this Mercor-extended benchmark: 58.7%

GPT-5.4xHigh

Score on the original open-source benchmark: 44.1% / Score on this Mercor-extended benchmark: 56.1%

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Pass@1