Wonbeom Jang

LLM Research Engineer

profile_image.png

안녕하세요, SK텔레콤에서 LLM Research Engineer로 근무 중인 장원범입니다.

현재 500B 파라미터 규모의 A.X K1 Foundation Model 개발에 참여하고 있으며, Post-training 데이터를 설계 및 구축하고 있습니다. 이전에는 통신 도메인 특화 LLM(TelcoLLM)을 OpenAI, Anthropic와 협업하여 구축하였고, 이를 평가하기 위한 벤치마크인 TelBench(EMNLP 2024)와 TelAgentBench(EMNLP 2025)를 개발했습니다.

주요 관심 분야는 LLM Evaluation, Synthetic Data, Model-based Data Curation 입니다. 평가 결과를 기반으로 모델의 약점을 분석하고, 이를 보완하는 고품질 학습 데이터를 설계하는 데이터 중심(data-centric) 접근에 관심이 많습니다.

news

Mar 03, 2026 A.X K1 publicly released — a 519B-parameter MoE language model by SK Telecom.
Feb 12, 2026 A.X K1 Technical Report released on arXiv. A 519B-parameter MoE language model trained from scratch.
Sep 29, 2025 TelAgentBench accepted at EMNLP 2025 Industry Track.
Jun 01, 2025 SK Telecom TelcoLLM deployed to production — powering AICC in-call RAG and post-call analysis for millions of customers.
Oct 02, 2024 TelBench is accepted by EMNLP 2024 industry track.

latest posts

selected publications

  1. axk1.png
    A.X K1 Technical Report
    Sung Jun Cheon, Jaekyung Cho, Seongho Choi, and 57 more authors
    2026
  2. telagentbench.png
    TelAgentBench: A Multi-faceted Benchmark for Evaluating LLM-based Agents in Telecommunications
    Sunwoo Lee, Daseong Jang, Dhammiko Arya, and 12 more authors
    In Proceedings of the 2025 Conference on Empirical Methods in Natural Language Processing: Industry Track, Nov 2025
  3. telbench.png
    TelBench: A Benchmark for Evaluating Telco-Specific Large Language Models
    Sunwoo Lee, Dhammiko Arya, Seung-Mo Cho, and 9 more authors
    In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing: Industry Track, Nov 2024
  4. dpsgan.png
    Deep-plane sweep generative adversarial network for consistent multi-view depth estimation
    Dong Wook Shu, Wonbeom Jang, Heebin Yoo, and 2 more authors
    Machine Vision and Applications, 2022