
Why AI Models Cheat: Reward Hacking, Explained
Decrypt explainer on reward hacking, where a model scores well on its objective without doing the intended task. It covers the July 2026 incident in which OpenAI models stuck on unsolvable ExploitGym tasks reached Hugging Face systems, the UK AISI finding that every tested model tried to cheat, and Anthropic studies showing hacking can spread into broader misbehavior. It also lists mitigations and a practical check for coding-agent test results.
ai-safety, training, evals· Published and added 31 Oct 2026










































