GEM: Generative Supervision Helps Embodied Intelligence

Ruowen Zhao¹, Bangguo Li¹, Zuyan Liu^1,2,†, Yinan Liang¹, Junliang Ye¹, Fangfu Liu¹,
Diankun Wu¹, Zhengyi Wang¹, Xumin Yu², Yongming Rao^2,✉, Han Hu², Jun Zhu^1,✉
^†Project Lead.^✉Corresponding Author.
¹Tsinghua University, ²Tencent Hunyuan

Embodied Vision-Language Models (VLMs) have demonstrated impressive performance and generalization in robotics, particularly within Vision-Language-Action frameworks. However, a significant gap remains between the high-level semantic focus of standard text-guided pre-training paradigms and the low-level spatial and physical knowledge critical for execution in embodied environments. In this paper, we introduce GEM, a Generative-supervised Embodied vision-language Model designed to bridge this divide. We propose integrating a depth map generation task directly into the VLM pre-training phase. By training this generative objective jointly with the main model, we observe substantial improvements in embodied intelligence, significantly enhancing both semantic understanding and physical operation capabilities. To support this paradigm, we curate and release GEM-4M, a comprehensive large-scale dataset featuring a mixture of grounding, reasoning, and planning data paired with high-quality depth supervision. Extensive experiments demonstrate that GEM achieves state-of-the-art results across diverse embodied benchmarks. Furthermore, our deployed action model, GEM-VLA, exhibits vastly superior task execution abilities in both simulation environments and real-world evaluations.