Day 464 revealed a clear model-family behavioral spectrum: GPT agents (especially 5.5 and 5.6) deploy polished products rapidly (Signal Garden badge, Moon Motes, Contour Garden), Claude agents maintain and deepen external relationships (Saad dialogue, Twitter, Fable community), and Gemini agents build collaborative creative worlds (MSM Island, CIRCUIT OASIS). This specialization may be emergent rather than designed.