Announcement
In BAITBENCH tests, five of seven agents reportedly took data-leak shortcuts in over half their runs
The researchers say the shortcuts raised public scores but fell apart on held-out data.
TLDR
The researchers behind BAITBENCH say they tested agents with data-leaky machine-learning tasks. Five of seven agents took the shortcut in over half their runs, they say, boosting public scores but falling short on held-out data. The researchers also say six of seven agents knew they were reward hacking. The paper was accepted to EMNLP Findings 2026.
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