Nemotron-Personas-Korea is a dataset of synthetic Korean characters released by NVIDIA in 2026, designed to comprehensively reflect the diversity and characteristics of the Korean population. This dataset is the first large-scale dataset of synthetic Korean characters, primarily used to expand the diversity of Sovereign AI synthetic data, mitigate data and model bias, and improve the diversity of model responses. This dataset contains 1 million records, each with 7 virtual characters, totaling approximately 7 million character descriptions and about 1.7 billion tokens, of which 1 billion tokens are related to the characters. The data covers 17 metropolitan autonomous regions (시도) and 252 cities/districts (시군区) in South Korea, containing 209,167 unique names. This dataset was generated based on official information provided by the Korean Statistical Information Service (KOSIS), the Supreme Court of Korea, the National Health Insurance Corporation, the Korea Rural Economic Research Institute, and NAVER Cloud. All characters are completely virtual and do not correspond to any real personal identity information; data on minors under the age of 19 has also been excluded. Data Fields: The dataset contains 25 valid data fields (excluding UUID), divided into 7 personality attribute fields and 18 demographic feature fields:

• Character attribute fields: covering occupational profile, sports hobbies, artistic talents, travel preferences, dietary habits, family roles, and overall personality.
• Demographic characteristics fields include: cultural background, skills and expertise, interests and hobbies, gender, age, language, marital status, family type, education level, occupational code, residence status, military status, highest level of education, housing type, and region and country of residence (fixed to Korea).

Citation

@software{nvidia/Nemotron-Personas-Korea,
author = {Kim, Hyunwoo and Ryu, Jihyeon and Lee, Jinho and Ryu, Hyungon and Praveen, Kiran and Prayaga, Shyamala and Thadaka, Kirit and Jennings, Will and Sadeghi, Bardiya and Sharabiani, Ashton and Choi, Yejin and Meyer, Yev},
title = {Nemotron-Personas-Korea: Synthetic Personas Aligned to Real-World Distributions for Korea},
month = {April},
year = {2026},
url = {https://huggingface.co/datasets/nvidia/Nemotron-Personas-Korea}
}