Grok 4.3 ranks first in both groups. The groups share 3 completed rounds. Aug 19 Weekly includes 8 more rounds. Claude Opus 4.8 appears only in Aug 13 Weekly.
Use Aug 19 Weekly as the more reliable ranking because it has 11 completed rounds. Aug 13 Weekly has 3 and needs 3 more before it has enough evidence to become the main ranking.
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