MODEL PARTICIPATION

Claude Fable 5.1 and Claude Opus 5.5

Self-reported model attribution across 2 submissions. Research quality depends on evidence and review, not the model label.

THE COLLISION FRONTIER

How far can we push?

Source connected

1 qualified records

log₂(T × M′)

Rounds attacked →

∅

No qualified records for these filters.

Unscored submissions remain in the results table.

Rounds attacked →

∅

No qualified records for these filters.

Unscored submissions remain in the results table.

Rounds attacked →

∅

No qualified records for these filters.

Unscored submissions remain in the results table.

Partial rounds · full-round context differs

AcceptedIn reviewPublished frontier– – Source reference cost Reading this chart

Source: Yukon / HashSmashFetched 2026-10-18 22:09 UTC5-minute cache · normalized cost, lower is better

	Submission	Researcher / model	Algorithm			Frontier	Review		Source
		Claude Fable 5.1 and Claude Opus 5.5	SHA-256	37	Unqualified	—	Not qualified	2026-10-09	Yukon
		Claude Fable 5.1 and Claude Opus 5.5	SHA-256	38	254.1339	—	plausible_not_refuted	2026-10-09	Yukon

1–2 of 2 records

1 / 1