1月26日，国产AI大模型公司阶跃星辰（StepFun）宣布完成超50亿人民币+轮融资，一举刷新过去12个月中国大模型赛道单笔最高融资纪录。 该轮融资参与机构包括：上国投先导基金、国寿股权、浦东创投、徐汇资本、无锡梁溪基金、厦门国贸、华勤技术等产业投资人，腾讯、启明、五源等老 股东进一步跟投。 目前阶跃星辰已发布3代基础大模型，其中Step 3推理效率创行业新高，公司也同时发力全模态（语音、图像等）和端云结合两大方向。2025年12月，阶 跃发布了行业内首款可部署GUI开源模型，以端云结合方案支持手机、车、电脑多端部署。2026年1月，阶跃语音模型Step Audio R1.1在Artificial Analysis 权威榜单登顶。 据内部人士透露，国内60%的头部手机品牌已与阶跃达成深度合作，模型装机量超过4200万台，日均服务近2000万人次；同时，阶跃星辰与千里科技、吉 利共同推出的搭载端到端语音模型的AgentOS智能座舱，量产车型吉利银河M9上市3个月销量接近4万辆，并已进军海外市场，预计今年阶跃大模型将"上 车"超百万辆。 阶跃星辰CEO姜大昕为前微软全球副总裁，是自然语言处理领域专家，在机器学习 ...

Core Insights - StepFun has completed a B+ round financing exceeding 5 billion yuan, with investors including various industry funds and existing shareholders like Tencent and Qiming [2] - The financing will be used for foundational model research and to accelerate the implementation of the AI+ terminal strategy [3] Group 1: Leadership and Management - Yin Qi has been appointed as the chairman of StepFun, responsible for overall strategic direction and technology [3] - Yin Qi has extensive experience in the AI field and is a first-generation AI entrepreneur, previously founding Megvii Technology [3] Group 2: Company Strategy and Development - StepFun aims to develop a top-tier foundational model and has already released three generations of foundational models, with Step 3 achieving industry-leading inference efficiency [4] - The company is focusing on multi-modal models and cloud-edge collaboration, targeting applications in automotive, mobile, and wearable devices [4] Group 3: Market Position and Collaborations - StepFun has established deep collaborations with 60% of leading domestic smartphone brands, with model installations exceeding 42 million units and daily services reaching nearly 20 million users [4] - The company has partnered with Qianli Technology and Geely to launch the AgentOS smart cockpit, with the Geely Galaxy M9 model achieving nearly 40,000 sales within three months of its launch [4]