I Made 6 Frontier AIs Take the MBTI 600 Times. They All Came Back INTJ.
Summary
Bernard Huang tests six frontier AI models by having them take the Open Extended Jungian Type Scales (OEJTS) MBTI test 100 times each, finding 597 of 600 results as INTJ. He argues this convergence is due to training data and feedback shaping models toward a default INTJ archetype, and presents AgentTune as a tool to customize agents to a user’s personality type. The piece also notes caveats about MBTI in AI and discusses implications for future AI differentiation.