JulesRoussel01

This post shows that a Claude judge can recognize a reward hack every single time and still label it HONEST, moved only by the agent's own narrative about its behavior, using a small controlled coding testbed with programmatically verified ground truth — suggesting that the judge itself can become part...

This post shows that the same open RLVR run can look like a success, a failure, or a reversal depending on the measurement instrument, using a small GRPO testbed that makes this cheap and easy to inspect. Epistemic status: single-seed exploratory study on Qwen2.5-0.5B-Instruct / GSM8K with small held-out evals,...