o4-mini (medium) (April 2025)

release date unknown

BenchAtlas Index

as of 2026-07-14

Not enough benchmark coverage for a composite score (needs ≥4 families across ≥3 categories). The per-benchmark evidence below stands on its own — sparse coverage is an evidence gap, not a low score.

Benchmark evidence

4 results

factuality

MASK

contamination=Potential contamination warning: This model was evaluated after the public release of MASK, allowing model builder access to the prompts and solutions.

72.9 %

70.7–75.2

independent

Scale Labs

knowledge science

Humanity's Last Exam

contamination=Potential contamination warning: This model was evaluated after the public release of HLE, allowing model builder access to the prompts and solutions. · implementation=scale

14.3 %

12.9–15.7

independent

Scale Labs

multimodal

VISTA

51.7 %

50.6–52.7

independent

Scale Labs

reasoning math

EnigmaEval

contamination=Potential contamination warning: This model was evaluated after the public release of EnigmaEval, allowing model builder access to the prompts and solutions.

6.8 %

6.0–7.6

independent

Scale Labs