Author

Pengyu Wang

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Preprint Jul 2026

CurveShift: Is Agent Progress Scalar? Separating Level from Shape

Progress in large language models is often summarized using a single scalar measure, such as a time horizon, a latent ability estimate, or an aggregate benchmark score. These summaries capture the overall performance, but they do not test whether progress is distributed differently across task difficulty. We find that...

Hanwen Xing, Pengyu Wang, Bingxu Meng et al. · 1 citation