Demo note. This note demonstrates what the SciDraft Hugo theme can do for academic and scientific publishing — for research institutions, researchers and students. Its content is demonstration material only: readers should ignore whether the demo content is correct. Long-context attention is usually chosen on cost rather than on quality. What decides whether a variant is usable at a given sequence length is how the score cost and the per-token cache grow with \(T\), and both are easiest to compare side by side in one table rather than across several paragraphs. ...