Windsurf Wave 9

May 15, 2025

Family of models, dubbed SWE-1, optimized for the entire software engineering process, not just the task of coding.

This family is currently comprised of three distinct models:

• SWE-1: Approximately Claude 3.5 Sonnet levels of tool-call reasoning while being cheaper to serve. It will be available to all paid users for a promotional period of 0 credits per user prompt.

• SWE-1-lite: A smaller model that replaces Cascade Base at better quality. It is available for unlimited use to all users, free or paid.

• SWE-1-mini: A small, extremely fast model that powers the Windsurf Tab passive experience for all users, free or paid.

Why build SWE-1?
Simply put, our goal is to accelerate software development by 99%. Writing code is only a fraction of what you do. A “coding-capable” model won’t cut it.