Calibration
Vals GPQA Diamond → LABBench2
LABBench2 is estimated from Vals GPQA Diamond with a Michaelis–Menten + offset curve fitted on 6 models measured on both: y = 0.0000 + 2.0000·x / (1.31705 + x), R² = 0.43, cross-validated error 1.9 pp. It is used for 0 estimates.