SWE-1 is our first model family designed to optimize the entire software engineering process, aiming to accelerate software development by 99%. Unlike traditional models that can only write code, SWE-1 not only writes code but also handles terminal operations, accesses other knowledge and the internet, tests products, and understands user feedback. The SWE-1 series includes three models: SWE-1, SWE-1-lite, and SWE-1-mini, catering to different user needs.