介绍 LongCat-Flash-Thinking：技术报告
人工智能
2025-11-10 v2
摘要
我们提出了 LongCat-Flash-Thinking，一个高效的5600亿参数开源混合专家推理模型。其先进能力通过精心设计的训练过程培养而成，从长思维链数据冷启动开始，最终进行大规模强化学习（RL）。我们首先采用精心设计的冷启动训练策略，显著增强了推理潜力，并为模型配备了形式推理与智能体推理的专业技能。随后，一项核心创新是我们的领域并行训练方案，该方案将不同领域（例如 STEM、代码、智能体）的优化解耦，随后将生成的专家模型融合为一个接近帕累托最优的单一模型。整个过程由我们的异步展开动态编排系统提供支持，这是一个大规模 RL 框架，在数万个加速器上比同步方法提供了超过三倍的训练加速。因此，LongCat-Flash-Thinking 在一系列复杂推理任务的开源模型中取得了最先进的性能。该模型在智能体推理中表现出卓越的效率，在 AIME-25 上将平均 token 消耗减少了64.5%（从19,653降至6,965），且未降低任务准确率。我们发布 LongCat-Flash-Thinking 以促进推理系统和智能体 AI 研究的进一步发展。
引用
@article{arxiv.2509.18883,
title = {Introducing LongCat-Flash-Thinking: A Technical Report},
author = {Meituan LongCat Team and Anchun Gui and Bei Li and Bingyang Tao and Bole Zhou and Borun Chen and Chao Zhang and Chao Zhang and Chengcheng Han and Chenhui Yang and Chi Zhang and Chong Peng and Chuyu Zhang and Cong Chen and Fengcun Li and Gang Xu and Guoyuan Lin and Hao Jiang and Hao Liang and Haomin Fu and Haoxiang Ma and Hong Liu and Hongyan Hao and Hongyin Tang and Hongyu Zang and Hongzhi Ni and Hui Su and Jiahao Liu and Jiahuan Li and Jialin Liu and Jianfei Zhang and Jianhao Xu and Jianing Wang and Jiaqi Sun and Jiaqi Zhang and Jiarong Shi and Jiawei Yang and Jingang Wang and Jinrui Ding and Jun Kuang and Jun Xu and Ke He and Kefeng Zhang and Keheng Wang and Keqing He and Li Wei and Liang Shi and Lin Qiu and Lingbin Kong and Lingchuan Liu and Linsen Guo and Longfei An and Mai Xia and Meng Zhou and Mengshen Zhu and Peng Pei and Pengcheng Jia and Qi Gu and Qi Guo and Qiong Huang and Quan Chen and Quanchi Weng and Rongxiang Weng and Ruichen Shao and Rumei Li and Shanglin Lei and Shuai Du and Shuaikang Liu and Shuang Zhou and Shuhao Hu and Siyu Xu and Songshan Gong and Tao Liang and Tianhao Hu and Wei He and Wei Shi and Wei Wang and Wei Wu and Wei Zhuo and Weifeng Tang and Wenjie Shi and Wenlong Zhu and Xi Su and Xiangcheng Liu and Xiangyu Xi and Xiangzhou Huang and Xiao Liu and Xiaochen Jiang and Xiaowei Shi and Xiaowen Shi and Xiaoyu Li and Xin Chen and Xinyue Zhao and Xuan Huang and Xuemiao Zhang and Xuezhi Cao and Xunliang Cai and Yajie Zhang and Yang Chen and Yang Liu and Yang Liu and Yang Zheng and Yaoming Wang and Yaqi Huo and Yerui Sun and Yifan Lu and Yiyang Li and Youshao Xiao and Yuanzhe Lei and Yuchen Xie and Yueqing Sun and Yufei Zhang and Yuhuai Wei and Yulei Qian and Yunke Zhao and Yuqing Ding and Yuwei Jiang and Zhaohua Yang and Zhengyu Chen and Zhijian Liu and Zhikang Xia and Zhongda Su and Ziran Li and Ziwen Wang and Ziyuan Zhuang and Zongyu Wang and Zunyuan Yang},
journal= {arXiv preprint arXiv:2509.18883},
year = {2025}
}