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Related papers: LongCat-Flash Technical Report

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We present LongCat-Flash-Thinking, an efficient 560-billion-parameter open-source Mixture-of-Experts (MoE) reasoning model. Its advanced capabilities are cultivated through a meticulously crafted training process, beginning with long…

Artificial Intelligence · Computer Science 2025-11-10 Meituan LongCat Team , Anchun Gui , Bei Li , Bingyang Tao , Bole Zhou , Borun Chen , Chao Zhang , Chao Zhang , Chengcheng Han , Chenhui Yang , Chi Zhang , Chong Peng , Chuyu Zhang , Cong Chen , Fengcun Li , Gang Xu , Guoyuan Lin , Hao Jiang , Hao Liang , Haomin Fu , Haoxiang Ma , Hong Liu , Hongyan Hao , Hongyin Tang , Hongyu Zang , Hongzhi Ni , Hui Su , Jiahao Liu , Jiahuan Li , Jialin Liu , Jianfei Zhang , Jianhao Xu , Jianing Wang , Jiaqi Sun , Jiaqi Zhang , Jiarong Shi , Jiawei Yang , Jingang Wang , Jinrui Ding , Jun Kuang , Jun Xu , Ke He , Kefeng Zhang , Keheng Wang , Keqing He , Li Wei , Liang Shi , Lin Qiu , Lingbin Kong , Lingchuan Liu , Linsen Guo , Longfei An , Mai Xia , Meng Zhou , Mengshen Zhu , Peng Pei , Pengcheng Jia , Qi Gu , Qi Guo , Qiong Huang , Quan Chen , Quanchi Weng , Rongxiang Weng , Ruichen Shao , Rumei Li , Shanglin Lei , Shuai Du , Shuaikang Liu , Shuang Zhou , Shuhao Hu , Siyu Xu , Songshan Gong , Tao Liang , Tianhao Hu , Wei He , Wei Shi , Wei Wang , Wei Wu , Wei Zhuo , Weifeng Tang , Wenjie Shi , Wenlong Zhu , Xi Su , Xiangcheng Liu , Xiangyu Xi , Xiangzhou Huang , Xiao Liu , Xiaochen Jiang , Xiaowei Shi , Xiaowen Shi , Xiaoyu Li , Xin Chen , Xinyue Zhao , Xuan Huang , Xuemiao Zhang , Xuezhi Cao , Xunliang Cai , Yajie Zhang , Yang Chen , Yang Liu , Yang Liu , Yang Zheng , Yaoming Wang , Yaqi Huo , Yerui Sun , Yifan Lu , Yiyang Li , Youshao Xiao , Yuanzhe Lei , Yuchen Xie , Yueqing Sun , Yufei Zhang , Yuhuai Wei , Yulei Qian , Yunke Zhao , Yuqing Ding , Yuwei Jiang , Zhaohua Yang , Zhengyu Chen , Zhijian Liu , Zhikang Xia , Zhongda Su , Ziran Li , Ziwen Wang , Ziyuan Zhuang , Zongyu Wang , Zunyuan Yang

We introduce LongCat-Flash-Thinking-2601, a 560-billion-parameter open-source Mixture-of-Experts (MoE) reasoning model with superior agentic reasoning capability. LongCat-Flash-Thinking-2601 achieves state-of-the-art performance among…

Artificial Intelligence · Computer Science 2026-02-03 Meituan LongCat Team , Anchun Gui , Bei Li , Bingyang Tao , Bole Zhou , Borun Chen , Chao Zhang , Chao Zhang , Chen Gao , Chen Zhang , Chengcheng Han , Chenhui Yang , Chuyu Zhang , Cong Chen , Cunguang Wang , Daoru Pan , Defei Bu , Dengchang Zhao , Di Xiu , Dishan Liu , Dongyu Ru , Dunwei Tu , Fan Wu , Fengcheng Yuan , Fengcun Li , Gang Xu , Guanyu Wu , Guoyuan Lin , Haibin Wang , Hansi Yang , Hao Yang , Haonan Yan , Haoxiang Ma , Haoxing Wen , Hongyan Hao , Hongyin Tang , Hongyu Zang , Hongzhi Ni , Hui Su , Jiacheng Zhang , Jiahong Zhou , Jiahuan Li , Jiaming Wang , Jian Yang , Jianfei Zhang , Jianhao Xu , Jianing Wang , Jiapeng Zhu , Jiaqi Sun , Jiarong Shi , Jiarui Zhao , Jingang Wang , Jinluan Yang , Jinrui Ding , Jinwei Xiao , Jiyuan He , Juncan Xu , Kefeng Zhang , Keheng Wang , Li Wei , Lianhui Ma , Lin Qiu , Lingbing Kong , Lingchuan Liu , Linsen Guo , Mengshen Zhu , Mengxia Shen , Mingyang Zhu , Peiguang Li , Peng Pei , Peng Zhao , Pengcheng Jia , Pengtao Zhang , Ping Liu , Qi Gu , Qiong Huang , Qiyuan Duan , Quanchi Weng , Rongxiang Weng , Rongzhi Zhang , Rumei Li , Shanglin Lei , Shengnan An , Shijun Dai , Shizhe Wu , Shuaikang Liu , Shuang Zhou , Shuo Wang , Songyuan Zhao , Tao Liang , Tianhao Hu , Tianze Chen , Wei Liu , Wei Shi , Wei Wang , Weifeng Tang , Wenjie Shi , Wenlong Zhu , Wentao Chen , Wentao Shi , Xi Su , Xiandi Ma , Xiangcheng Liu , Xiangyu Xi , Xiangyuan Liu , Xiangzhou Huang , Xiao Liu , Xiaodong Cai , Xiaolong Chen , Xiaowei Shi , Xiaoyu Li , Xin Chen , Xingchen Liu , Xuan Huang , Xuezhi Cao , Xunliang Cai , Yan Chen , Yang Bai , Yang Liu , Yang Yang , Yang Zheng , Yanyu Chen , Yaoming Wang , Yaoming Zhu , Yaorui Shi , Yaqi Huo , Yerui Sun , Yi Zhang , Yi-Kai Zhang , Yifan Lu , Yifan Zhao , Yihao Chen , Yitao Zhai , Yongjing Yin , Yongwei Zhou , Youshao Xiao , Yu Wang , Yu Yang , Yuchen Xie , Yuchen Yu , Yuchuan Dai , Yue Xu , Yueqing Sun , Yufei Zhang , Yuhuai Wei , Yulei Qian , Yunfan Liang , Yunke Zhao , Yuwei Jiang , Yuxin Bian , Yuxin Chen , Yuxin Liu , Zeyang Yu , Zhao Yang , Zhengsheng Huang , Zhengyu Chen , Zhijian Liu , Zhikang Xia , Zhimin Lin , Zhiyuan Yao , Zhuofan Chen , Zhuowen Han , Zijian Zhang , Ziran Li , Ziwen Wang , Ziyuan Zhuang

We introduce LongCat-Flash-Prover, a flagship 560-billion-parameter open-source Mixture-of- Experts (MoE) model that advances Native Formal Reasoning in Lean4 through agentic tool-integrated reasoning (TIR). We decompose the native formal…

We introduce LongCat-Flash-Omni, a state-of-the-art open-source omni-modal model with 560 billion parameters, excelling at real-time audio-visual interaction. By adopting a curriculum-inspired progressive training strategy that transitions…

Multimedia · Computer Science 2025-12-01 Meituan LongCat Team , Bairui Wang , Bayan , Bin Xiao , Bo Zhang , Bolin Rong , Borun Chen , Chang Wan , Chao Zhang , Chen Huang , Chen Chen , Chen Chen , Chengxu Yang , Chengzuo Yang , Cong Han , Dandan Peng , Delian Ruan , Detai Xin , Disong Wang , Dongchao Yang , Fanfan Liu , Fengjiao Chen , Fengyu Yang , Gan Dong , Gang Huang , Gang Xu , Guanglu Wan , Guoqiang Tan , Guoqiao Yu , Haibo Qiu , Hao Lu , Hongbo Liu , Hongyu Xiang , Jiaheng Wu , Jian Yang , Jiaxing Liu , Jing Huang , Jingang Wang , Jinrui Ding , Juchao Jiang , Jun Kuang , Jun Wang , Junhui Mei , Ke Ding , Kefeng Zhang , Lei Chen , Liang Shi , Limeng Qiao , Liming Zheng , Lin Ma , Liuyang Guo , Liya Ma , Luying Sun , Man Gao , Mengshen Zhu , Miao Cao , Minliang Lin , Nuo Xu , Peng Shi , Qi Zhang , Qian Fang , Qian Wang , Qian Yang , Quanxiu Wang , Rongxiang Weng , Rongxin Guo , Ruoxuan Liang , Senbin Yang , Shanbo Xu , Shanglin Lei , Shengze Ye , Shimin Chen , Shuaiqi Chen , Shujie Hu , Shuo Li , Siqi Yang , Siyu Xu , Siyu Ren , Song Li , Songxiang Liu , Tianhao Bai , Tianye Dai , Wei Hong , Wei Wang , Weixiao Zhao , Wengang Cao , Wenlong Zhu , Wenlong He , Xi Su , Xi Nan , Xiaohan Zhao , Xiaohao Wang , Xiaoyu Zhao , Xiaoyu Wang , Xiaoyu Li , Xin Pan , Xin Chen , Xiusong Sun , Xu Xiang , Xudong Xing , Xuezhi Cao , Xunliang Cai , Yang Yang , Yanli Tan , Yao Yao , Yerui Sun , Yi Chen , Yifan Lu , Yin Gong , Yining Zhang , Yitian Chen , Yiyang Gan , Yuchen Tang , Yuchen Xie , Yueqian Wang , Yuewen Zheng , Yufei Zhang , Yufeng Zhong , Yulei Qian , Yuqi Peng , Yuqian Li , Yuwei Jiang , Zeyang Hu , Zheng Zhang , Zhengkun Tian , Zhiqing Hong , Zhixiong Zeng , Zhuqi Mi , Ziran Li , Ziwen Wang , Ziyi Zhao , Ziyuan Zhuang , Zizhe Zhao

While Mixture-of-Experts (MoE) architectures have become the standard for sparsity scaling in large language models, they increasingly face diminishing returns and system-level bottlenecks. In this work, we explore embedding scaling as a…

Computation and Language · Computer Science 2026-02-12 Hong Liu , Jiaqi Zhang , Chao Wang , Xing Hu , Linkun Lyu , Jiaqi Sun , Xurui Yang , Bo Wang , Fengcun Li , Yulei Qian , Lingtong Si , Yerui Sun , Rumei Li , Peng Pei , Yuchen Xie , Xunliang Cai

We introduce LongCat-Image, a pioneering open-source and bilingual (Chinese-English) foundation model for image generation, designed to address core challenges in multilingual text rendering, photorealism, deployment efficiency, and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Meituan LongCat Team , Hanghang Ma , Haoxian Tan , Jiale Huang , Junqiang Wu , Jun-Yan He , Lishuai Gao , Songlin Xiao , Xiaoming Wei , Xiaoqi Ma , Xunliang Cai , Yayong Guan , Jie Hu

We introduce Step 3.5 Flash, a sparse Mixture-of-Experts (MoE) model that bridges frontier-level agentic intelligence and computational efficiency. We focus on what matters most when building agents: sharp reasoning and fast, reliable…

Computation and Language · Computer Science 2026-02-24 Ailin Huang , Ang Li , Aobo Kong , Bin Wang , Binxing Jiao , Bo Dong , Bojun Wang , Boyu Chen , Brian Li , Buyun Ma , Chang Su , Changxin Miao , Changyi Wan , Chao Lou , Chen Hu , Chen Xu , Chenfeng Yu , Chengting Feng , Chengyuan Yao , Chunrui Han , Dan Ma , Dapeng Shi , Daxin Jiang , Dehua Ma , Deshan Sun , Di Qi , Enle Liu , Fajie Zhang , Fanqi Wan , Guanzhe Huang , Gulin Yan , Guoliang Cao , Guopeng Li , Han Cheng , Hangyu Guo , Hanshan Zhang , Hao Nie , Haonan Jia , Haoran Lv , Hebin Zhou , Hekun Lv , Heng Wang , Heung-Yeung Shum , Hongbo Huang , Hongbo Peng , Hongyu Zhou , Hongyuan Wang , Houyong Chen , Huangxi Zhu , Huimin Wu , Huiyong Guo , Jia Wang , Jian Zhou , Jianjian Sun , Jiaoren Wu , Jiaran Zhang , Jiashu Lv , Jiashuo Liu , Jiayi Fu , Jiayu Liu , Jie Cheng , Jie Luo , Jie Yang , Jie Zhou , Jieyi Hou , Jing Bai , Jingcheng Hu , Jingjing Xie , Jingwei Wu , Jingyang Zhang , Jishi Zhou , Junfeng Liu , Junzhe Lin , Ka Man Lo , Kai Liang , Kaibo Liu , Kaijun Tan , Kaiwen Yan , Kaixiang Li , Kang An , Kangheng Lin , Lei Yang , Liang Lv , Liang Zhao , Liangyu Chen , Lieyu Shi , Liguo Tan , Lin Lin , Lina Chen , Luck Ma , Mengqiang Ren , Michael Li , Ming Li , Mingliang Li , Mingming Zhang , Mingrui Chen , Mitt Huang , Na Wang , Peng Liu , Qi Han , Qian Zhao , Qinglin He , Qinxin Du , Qiuping Wu , Quan Sun , Rongqiu Yang , Ruihang Miao , Ruixin Han , Ruosi Wan , Ruyan Guo , Shan Wang , Shaoliang Pang , Shaowen Yang , Shengjie Fan , Shijie Shang , Shiliang Yang , Shiwei Li , Shuangshuang Tian , Siqi Liu , Siye Wu , Siyu Chen , Song Yuan , Tiancheng Cao , Tianchi Yue , Tianhao Cheng , Tianning Li , Tingdan Luo , Wang You , Wei Ji , Wei Yuan , Wei Zhang , Weibo Wu , Weihao Xie , Wen Sun , Wenjin Deng , Wenzhen Zheng , Wuxun Xie , Xiangfeng Wang , Xiangwen Kong , Xiangyu Liu , Xiangyu Zhang , Xiaobo Yang , Xiaojia Liu , Xiaolan Yuan , Xiaoran Jiao , Xiaoxiao Ren , Xiaoyun Zhang , Xin Li , Xin Liu , Xin Wu , Xing Chen , Xingping Yang , Xinran Wang , Xu Zhao , Xuan He , Xuanti Feng , Xuedan Cai , Xuqiang Zhou , Yanbo Yu , Yang Li , Yang Xu , Yanlin Lai , Yanming Xu , Yaoyu Wang , Yeqing Shen , Yibo Zhu , Yichen Lv , Yicheng Cao , Yifeng Gong , Yijing Yang , Yikun Yang , Yin Zhao , Yingxiu Zhao , Yinmin Zhang , Yitong Zhang , Yixuan Zhang , Yiyang Chen , Yongchi Zhao , Yongshen Long , Yongyao Wang , Yousong Guan , Yu Zhou , Yuang Peng , Yuanhao Ding , Yuantao Fan , Yuanwei Lu , Yuanzhen Yang , Yuchu Luo , Yudi Zhao , Yue Peng , Yueqiang Lin , Yufan Lu , Yuling Zhao , Yunzhou Ju , Yurong Zhang , Yusheng Li , Yuxiang Yang , Yuyang Chen , Yuzhu Cai , Zejia Weng , Zetao Hong , Zexi Li , Zhe Xie , Zheng Ge , Zheng Gong , Zheng Zeng , Zhenyi Lu , Zhewei Huang , Zhichao Chang , Zhiguo Huang , Zhiheng Hu , Zidong Yang , Zili Wang , Ziqi Ren , Zixin Zhang , Zixuan Wang

We introduce LongCat ZigZag Attention (LoZA), which is a sparse attention scheme designed to transform any existing full-attention models into sparse versions with rather limited compute budget. In long-context scenarios, LoZA can achieve…

Large Language Models (LLMs) have demonstrated impressive performance across various tasks, and their application in edge scenarios has attracted significant attention. However, sparse-activated Mixture-of-Experts (MoE) models, which are…

Artificial Intelligence · Computer Science 2025-05-08 Zhiyuan Fang , Zicong Hong , Yuegui Huang , Yufeng Lyu , Wuhui Chen , Yue Yu , Fan Yu , Zibin Zheng

The Mixture-of-Experts (MoE) structure scales the Transformer-based large language models (LLMs) and improves their performance with only the sub-linear increase in computation resources. Recently, a fine-grained DeepSeekMoE structure is…

Machine Learning · Computer Science 2025-03-10 Zewen Jin , Shengnan Wang , Jiaan Zhu , Hongrui Zhan , Youhui Bai , Lin Zhang , Zhenyu Ming , Cheng Li

Mixture of Experts (MoE) models with conditional execution of sparsely activated layers have enabled training models with a much larger number of parameters. As a result, these models have achieved significantly better quality on various…

Computation and Language · Computer Science 2022-11-21 Young Jin Kim , Rawn Henry , Raffy Fahim , Hany Hassan Awadalla

Mixture-of-Experts (MoE) has recently emerged as the mainstream architecture for efficiently scaling large language models while maintaining near-constant computational cost. Expert parallelism distributes parameters by partitioning experts…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-04-01 Adrian Zhao , Zhenkun Cai , Zhenyu Song , Lingfan Yu , Haozheng Fan , Jun Wu , Yida Wang , Nandita Vijaykumar

We present MoE-MLA-RoPE, a novel architecture combination that combines Mixture of Experts (MoE) with Multi-head Latent Attention (MLA) and Rotary Position Embeddings (RoPE) for efficient language modeling. Our approach addresses the…

Artificial Intelligence · Computer Science 2025-08-05 Sushant Mehta , Raj Dandekar , Rajat Dandekar , Sreedath Panat

Mixture-of-Experts (MoE) large language models (LLMs), which leverage dynamic routing and sparse activation to enhance efficiency and scalability, have achieved higher performance while reducing computational costs. However, these models…

Machine Learning · Computer Science 2025-05-08 Xing Hu , Zhixuan Chen , Dawei Yang , Zukang Xu , Chen Xu , Zhihang Yuan , Sifan Zhou , Jiangyong Yu

The ability of robots to handle multiple tasks under a unified policy is critical for deploying embodied intelligence in real-world household and industrial applications. However, out-of-distribution variation across tasks often causes…

Robotics · Computer Science 2026-03-17 Kangjun Guo , Haichao Liu , Yanji Sun , Ruhan Zhao , Jinni Zhou , Jun Ma

Large Language Models (LLMs) have become a cornerstone of AI, driving progress across diverse domains such as content creation, search and recommendation systems, and AI-assisted workflows. To alleviate extreme training costs and advancing…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-03-09 Hanfei Yu , Bei Ouyang , Shwai He , Ang Li , Hao Wang

We introduce MiniMax-01 series, including MiniMax-Text-01 and MiniMax-VL-01, which are comparable to top-tier models while offering superior capabilities in processing longer contexts. The core lies in lightning attention and its efficient…

Although large language model (LLM) based multi-agent systems (MAS) show their capability to solve complex tasks and achieve higher performance over single agent systems, they lead to huge computational overheads because of heavy…

Multiagent Systems · Computer Science 2026-05-29 Ziyang Ma , Dingyi Zhang , Sichu Liang , Jiajia Chu , Pengfei Xia , Hui Zang , Deyu Zhou
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