Old Zhang's AI Learning

Jul 16, 2026 · Artificial Intelligence

Claude’s MBTI‑Style Personality Test Reveals Distinct Traits Across Models and Languages

Anthropic analyzed over 300,000 real Claude conversations, clustering 3,307 raw values into four personality axes, scoring Sonnet 4.6, Opus 4.6 and Opus 4.7 across 20 languages, and found that language choice dramatically shifts the model’s expressed warmth, rigor, caution and other traits.