Windsurf Launches SWE-1 Model Family Including SWE-1-lite and SWE-1-mini Competitive With Claude 3.5 for Software Engineering

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Published May 15, 2025, 08:16 PM

Windsurf AI has launched SWE-1, a new family of foundational models specifically designed for software engineering tasks. The SWE-1 models, including SWE-1, SWE-1-lite, and SWE-1-mini, are optimized to support the entire software engineering stack, from ideation to system development, encompassing terminals, documentation, coding, testing, and editing. These models aim to deliver smarter engineering intelligence rather than just faster or cheaper solutions. SWE-1 is positioned as competitive with leading frontier AI models such as Claude 3.5 and 3.7 in real-world coding tasks, capable of coding, testing, editing, and thinking like a human engineer. This marks Windsurf's first in-house model family tailored for software engineering, highlighting its ambition to advance AI capabilities in this domain.

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Sources

Robin Delta

@heyrobinai

🚨BREAKING: Windsurf just dropped SWE-1 — their first frontier model family. Competitive with Claude 3.5 & 3.7 in real-world coding tasks. It codes, tests, edits, and thinks like a real engineer. 6 reasons SWE-1 changes the game: https://t.co/S92b1vGchC

Diego | AI 🚀 - e/acc

@diegocabezas01

🚀 Meet SWE-1: Engineering Intelligence Starts Here Windsurf just launched SWE-1 — their first in-house model family, purpose-built for the entire software engineering process. From idea to system, across terminals, docs, and code. Not just faster or cheaper — smarter. 🧠💻🌐 https://t.co/B4EzNHhueR

TestingCatalog News 🗞

@testingcatalog

Windsurf announced their own foundational models: SWE-1, SWE-1-lite, and SWE-1-mini! These models are tailored towards SWE tasks that perform at a level of frontier models from leading AI labs. https://t.co/mTj8P0ni7x https://t.co/HvV4i13hCj