Chapter Assessment: Public Benchmarks Versus Product Evals

This review checks how far a public score can be trusted, and how a team turns its own test set into a model choice. It covers the pieces of a benchmark, contamination, label errors and saturation, Arena's pairwise rankings, and the job ticket assistant's switch to a cheaper model. The bank has 20 questions, and each attempt draws ten. Most questions give you a reported number or a team's decision and ask what it really means. Several ask you to compute a result