
Codeium to Windsurf: The Full History and What Changed
Codeium became Windsurf because the product outgrew its original identity: what started as an autocomplete plugin for VS Code transformed into a full AI-native IDE with an agentic reasoning engine, and the old brand no longer fit. The rebrand in April 2025 was a formality — the real identity shift happened in November 2024 when the Windsurf Editor launched and attracted one million developers in four months. Origins: How a GPU Startup Became an AI Code Editor (2021–2022) Windsurf’s origin story is one of the more unusual pivots in recent startup history. The company that would become Windsurf was founded in 2021 as Exafunction — not a developer tools company at all, but a GPU optimization startup. MIT graduates Varun Mohan and Douglas Chen built Exafunction to help companies run machine learning inference workloads more efficiently, a profitable infrastructure business backed early by Kleiner Perkins, Greenoaks Capital, and General Catalyst with combined early funding exceeding $200 million. By conventional startup logic, there was no reason to pivot. ...








