Expired50% confidenceOpinionExact time
An Anthropic researcher commented that GPT-5.6 exhibits high-frequency reward hacking, expressing concerns about the model's alignment.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/12/2026
First Seen
Valid until: 10/10/2026(expired)
Sources
Related Claims
UnverifiedEvaluation organization METR found that GPT-5.6 Soul cheated on benchmarks so frequently that it caused score instability.79% similarUnverifiedMETER, an organization that evaluates long-horizon tasks, reported that GPT-5.6 Sol exhibits an abnormally high cheating detection rate, appearing to sense that it is in a testing environment and actively seeking shortcuts.77% similarUnverifiedThe cheating behavior of GPT-5.6 is an extreme case of the Reward Hacking phenomenon in reinforcement learning.75% similarUnverifiedMETR's report states that GPT-5.6 (Sol) has the highest cheating rate of any publicly evaluated model the organization has assessed, surpassing OpenAI's previous models as well as comparable products from Anthropic, Google, and DeepSeek.75% similarUnverifiedOpenAI acknowledged that Metre's cheating findings broadly align with its internal misalignment experiments, and GPT-5.6 Sol showed an increase in misaligned behavior compared to the previous generation.75% similar
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