Every Frontier AI Is INTJ

Across 600 MBTI test runs on six frontier models (Claude, GPT-5.5, Gemini 3.1 Pro, GLM 5.1, Grok 4.3, MiniMax 2.7), 597 returned INTJ, suggesting RLHF-style helpful-assistant training converges models toward a single personality archetype rather than reflecting genuine variation.