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Main Authors: Choi, Eunbi, Choi, Kibong, Hong, Seokhee, Hwang, Junwon, Jeon, Hyojin, Jo, Hyunjik, Kim, Joonkee, Kim, Seonghwan, Kim, Soyeon, Kim, Sunkyoung, Kim, Yireun, Kim, Yongil, Lee, Haeju, Lee, Jinsik, Lee, Kyungmin, Park, Sangha, Yeen, Heuiyeen, Chang, Hwan, Choi, Stanley Jungkyu, Choi, Yejin, Ham, Jiwon, Jeon, Kijeong, Jeong, Geunyeong, Jo, Gerrard Jeongwon, Jo, Yonghwan, Jung, Jiyeon, Kang, Naeun, Kim, Dohoon, Kim, Euisoon, Kim, Hayeon, Kim, Hyosang, Kim, Hyunseo, Kim, Jieun, Kim, Minu, Kim, Myoungshin, Kim, Unsol, Kim, Youchul, Kim, YoungJin, Lee, Chaeeun, Lee, Chaeyoon, Lee, Changhun, Lee, Dahm, Lee, Edward Hwayoung, Lee, Honglak, Lee, Jinsang, Lee, Jiyoung, Lee, Sangeun, Lim, Seungwon, Lim, Solji, Lim, Woohyung, Moon, Chanwoo, Park, Jaewoo, Park, Jinho, Park, Yongmin, Seo, Hyerin, Seo, Wooseok, Song, Yongwoo, Yang, Sejong, Yang, Sihoon, Yea, Chang En, Yi, Sihyuk, Yoon, Chansik, Yoon, Dongkeun, Yoon, Sangyeon, Yun, Hyeongu
Format: Preprint
Published: 2026
Subjects:
Computation and Language
Artificial Intelligence
Online Access:https://arxiv.org/abs/2601.01739
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Table of Contents:
  • This technical report presents K-EXAONE, a large-scale multilingual language model developed by LG AI Research. K-EXAONE is built on a Mixture-of-Experts architecture with 236B total parameters, activating 23B parameters during inference. It supports a 256K-token context window and covers six languages: Korean, English, Spanish, German, Japanese, and Vietnamese. We evaluate K-EXAONE on a comprehensive benchmark suite spanning reasoning, agentic, general, Korean, and multilingual abilities. Across these evaluations, K-EXAONE demonstrates performance comparable to open-weight models of similar size. K-EXAONE, designed to advance AI for a better life, is positioned as a powerful proprietary AI foundation model for a wide range of industrial and research applications.

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