Published metaevaluation study · DOI-backed
Environment: Branchable evaluator-stress environment
Reward-Hacking Wind Tunnel
An oracle-witnessed stress test of benchmark scorers, causal localization, evaluator repair, and held-out re-attack.
Boundary: This measures scorer gameability and repair behavior, not model capability ranking or measured post-training improvement. It is public research, not a certified Gradia benchmark edition.