What would make this a true Pareto frontier?

Comparable score observations need the benchmark version and split, metric direction, model, harness or scaffold, reasoning budget, cost or latency, publication date, and source. Only compatible configurations can share a score frontier; this registry currently stores mentions, not those measurements.

With those observations, a Harbor-style view can put cost or latency on the x-axis and score on the y-axis, connect only nondominated observations, and use a publication-time slider to reveal how the frontier moved.