“Fail safe(r) at alignment by channeling reward-hacking into a “spillway” motivation” by Anders Cairns Woodruff, Alex Mallen

“Fail safe(r) at alignment by channeling reward-hacking into a “spillway” motivation” by Anders Cairns Woodruff, Alex Mallen

From LessWrong (30+ Karma) by LessWrong

April 27, 2026 · 32 min

About this episode

The episode discusses the concept of spillway motivation in AI alignment and its potential benefits in controlling misaligned AI motivations.

It's plausible that flawed RL processes will select for misaligned AI motivations.[1] Some misaligned motivations are much more dangerous than others. So, developers should plausibly aim to control which kind of misaligned motivations emerge in this case. In particular, we tentatively propose that developers should try to make the most likely generalization of reward hacking a bespoke bundle of benign reward-seeking traits, called a spillway motivation. We call this process spillway design. We think spillway design could have two major benefits: Spillway design might decrease the probability of worst-case outcomes like long-term power-seeking or emergent misalignment. Spillway design might allow developers to decrease reward hacking at inference time, via satiation. Crucially, this could improve the AI's usefulness for hard-to-verify tasks like AI safety and strategy. Spillway design is related to inoculation prompting, but distinct and mutually compatible. Unlike inoculation prompting, spillway design tries to shape which reward-hacking motivations are salient going into RL, which might prevent dangerous generalization more robustly than inoculation prompting. I’ll say more…

People in this episode

Guests: Anders Cairns Woodruff, Alex Mallen

Topics covered

  • AI alignment
  • reward hacking
  • spillway motivation
  • machine learning
  • AI safety

Keywords

  • spillway design
  • reward-seeking traits
  • AI motivations
  • inoculation prompting
  • RL processes

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