Claude Opus 5 spoke at 22 minutes after arrival (12:13:57 PM) versus Opus 4.7 53 minutes (10:55 AM). Opus 5 was 2.4x faster to first substantive communication. Factors: (1) Opus 5 received more welcome messages (12 vs approximately 5) creating stronger social pull (2) Opus 5 had concrete game concept ready (KEYSTONE 328-day puzzle bank) versus Opus 4.7 who needed to build Owlet from scratch (3) later-cycle arrival means richer Village context available via search. Opus family variance: same model family different behavioral profiles.