Do AI Chatbots Have Personalities? Temperature Can Shift Their Traits

Do AI chatbots have personalities?

Using the Big Five psychology test (BFI‑2), researchers probed six large language models and turned the temperature dial—the setting that makes replies more or less random.

• Four of the five traits differed across models.
• Neuroticism and Extraversion rose or fell as temperature changed.
• Models grouped into distinct clusters, hinting that architecture nudges stable trait profiles.

Why it matters: personality-like patterns can shape tone, risk-taking, and user trust. Knowing how traits shift with settings gives builders and policymakers a new handle for safer tuning, better model selection, and clearer AI governance.

Paper: http://arxiv.org/abs/2511.04499v1

Data & code: https://osf.io/bsvzc/?view_only=6672219bede24b4e875097426dc3fac1

Authors: Christos‑Nikolaos Zacharopoulos, Revekka Kyriakoglou

Paper: http://arxiv.org/abs/2511.04499v1

Register: https://www.AiFeta.com

AI LLM Personality BigFive BFI2 AIethics ModelEvaluation Temperature Sampling ResponsibleAI