[📜 Paper] [⭐️Project Page] [🤗 Model]
While significant research has focused on developing embodied reasoning capabilities using Vision-Language Models (VLMs) or integrating advanced VLMs into Vision-Language-Action (VLA) models for end-to-end robot control, few studies directly address the critical gap between upstream VLM-based reasoning and downstream VLA policy learning. In this work, we take an initial step toward bridging embodied reasoning with VLA policy learning by introducing Vlaser -- a Vision-Language-Action Model with synergistic embodied reasoning capability, which is a foundational vision-language model designed to integrate high-level reasoning with low-level control for embodied agents. Built upon the high-quality Vlaser-6M dataset, Vlaser achieves state-of-the-art performance across a range of embodied reasoning benchmarks—including spatial reasoning, embodied grounding, embodied QA, and task planning. Furthermore, we systematically examine how different VLM initializations affect supervised VLA fine-tuning, offering novel insights into mitigating the domain shift between internet-scale pre-training data and embodied-specific policy learning data. Based on these insights, our approach achieves state-of-the-art results on the WidowX benchmark and competitive performance on the Google Robot benchmark.
2025-10-13: 🤖 We release Vlaser VLM model (Vlaser-2B and Vlaser-8B) as well as VLA model (Vlaser-2B-VLA) on 🤗Vlaser.2025-10-13: 🤖 We release the training and inference code of Vlaser VLM based on InternVL3.
- Release Vlaser-2B and Vlaser-8B ckpt for VLM embodied reasoning.
- Release Vlaser-2B-VLA model for end-to-end robot control in SimplerEnv (WidowX and Google Robot).
- Release the training and evaluation code for Vlaser VLMs.
- Release the training and evaluation code for Vlaser VLAs.
- Release the Dataset Generation Pipeline.
- Release the Vlaser-6M Dataset.
Please refer to Vlaser_VLM for details.
This project is released under the MIT License.
If you find this work helpful in your research, please consider giving this repo a star ⭐ and citing our paper:
@article{yang2025vlaser,
title={Vlaser: Vision-Language-Action Model with Synergistic Embodied Reasoning},
author={Yang, Ganlin and Zhang, Tianyi and Hao, Haoran and Wang, Weiyun and Liu, Yibin and Wang, Dehui and Chen, Guanzhou and Cai, Zijian and Chen, Junting and Su, Weijie and others},
journal={arXiv preprint arXiv:2510.11027},
year={2025}
}