O3 2025 04.16 Reasoning

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

1 results

long context instruction

MultiChallenge

high effort

56.6 %

53.3–59.9

independent

Scale Labs