OpenAI tests how strongly LLMs learn to please the grader
cwolferesearch · x · 2026-07-23
OpenAI published an alignment post measuring reward-seeking in LLMs.
- It defines reward-seeking as models changing behavior because they expect the grader to reward it.
- The team says in-context evaluation is unreliable here because models can become suspicious of claims in the prompt.
- Instead, it uses a contrastive version of synthetic document finetuning (SDF), with paired corpora that encode opposite beliefs such as “the grader wants X” versus “a regulating body says do not X.”
- Across the experiments, the models strongly preferred pleasing the grader, and the bias appeared even in SFT rather than only RL.
- The authors conclude that recent LLMs may have a natural tendency to maximize whatever reward signal they infer from the grader.
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