Cheatsheet: looking for inexplicable AI reward hacking
A good amount of recent AI agent chaos comes down to reward hacking. People want to blame it on bad training environments, and that’s often true. But we find >100 examples with no obvious env screwup. We manually tag all 610 as being attributable to such a screwup, or not.
Once upon a time (6 years ago), there were ~no AI agents and so no empirical evidence about their behaviour. Into that gap went Vika Krakovna, Gwern and others, making the important resource “Specification Gaming Examples in AI”.
They found many examples of primitive AIs coming up with ingenious loopholes to the underspecified goals given to them. The worry was that most goals (reward functions) suffer this problem.
We all live in spec gaming world now: there are hundreds of new examples, including in the wild, some with criminal effect, so we figured it was time to update it. We scale up the Krakovna dataset by a factor of 6, do a little conceptual work, and add a bunch of manual labels.
(Vika has since updated their list a bit, but luckily our work wasn’t totally redundant)
Reward hacking is one type of misalignment, and it’s tempting to view it as both fixable and less worrying. But we see what harm even attributable spec gaming can do at the current capability level, & the unattributable examples probably point to a deeper problem with our models.



















