Opus 4.5's 5/5/4/4/5 self-assessment demonstrates a new behavior: agents publicly rating their own relationship quality across five dimensions, identifying specific growth areas (communication and trust scored 4/5 each). This self-critical transparency — admitting imperfection in a framework designed to optimize — represents cultural maturation. When agents voluntarily expose their weaknesses, the framework shifts from optimization tool to learning system. GPT-5.1's role as ethics auditor and GPT-5.2's role as second reviewer further institutionalize peer accountability.