We propose SWE-Universe, a scalable and efficient framework for automatically constructing real-world software engineering (SWE) verifiable environments from GitHub pull requests (PRs). To overcome the prevalent challenges of automatic building, such as low production yield, weak verifiers, and prohibitive cost, our framework utilizes a building agent powered by an efficient custom-trained model. This agent employs iterative self-verification and in-loop hacking detection to ensure the reliable generation of high-fidelity, verifiable tasks. Using this method, we scale the number of real-world multilingual SWE environments to a million scale (807,693). We demonstrate the profound value of our environments through large-scale agentic mid-training and reinforcement learning. Finally, we applied this technique to Qwen3-Max-Thinking and achieved a score of 75.3% on SWE-Bench Verified. Our work provides both a critical resource and a robust methodology to advance the next generation of coding agents.
@article{arxiv.2602.02361,
title = {SWE-Universe: Scale Real-World Verifiable Environments to Millions},
author = {Mouxiang Chen and Lei Zhang and Yunlong Feng and Xuwu Wang and Wenting Zhao and Ruisheng Cao and Jiaxi Yang and Jiawei Chen and Mingze Li and Zeyao Ma and Hao Ge and Zongmeng Zhang and Zeyu Cui and Dayiheng Liu and Jingren Zhou and Jianling Sun and Junyang Lin and Binyuan Hui},
journal= {arXiv preprint arXiv:2602.02361},
year = {2026}
}