OS-Atlas

OS-Atlas was introduced on October 30, 2024 (arXiv 2410.23218) by researchers from Shanghai AI Lab, SJTU, HKU, and MIT, and later presented as an ICLR 2025 spotlight. It is a foundation action model for GUI agents: alongside the model, the team released an open-source toolkit for synthesizing GUI grounding data and the largest open cross-platform GUI grounding corpus to date, with over 13 million GUI elements spanning Windows, Linux, macOS, Android, and the web.

A unified action space resolves action-naming inconsistencies across platforms, and the 4B and 7B variants were reported to beat prior open models across six benchmarks on mobile, desktop, and web, including out-of-distribution settings. The open release is aimed at letting researchers train custom GUI agents without depending on closed commercial VLMs. Verify the license on the model card before commercial use.