Windsurf (Code Editor)

Windsurf is an AI-powered code editor developed by the American start-up Codeium, and since 2025 owned by Cognition AI, which rebranded it as Devin Desktop on 2 June 2026. The editor was designed around an agentic workflow — rather than only suggesting lines of code, its AI agent can plan and execute multi-step development tasks across an entire codebase.^[1]

Windsurf rose to prominence not only for its technology but for an unusual 2025 corporate contest: OpenAI agreed terms to acquire the company for about US$3 billion, the deal collapsed, Google hired the founding leadership and licensed the technology for US$2.4 billion, and Cognition acquired the remaining business days later. The sequence became a widely cited example of "reverse acquihire" dealmaking in the AI industry.^[2][3]

History

Codeium was founded in 2021 by Varun Mohan and Douglas Chen, engineers who built a free AI code-completion extension for popular editors. The extension attracted millions of users by offering autocomplete at no cost, and the company used that distribution to develop a full AI-native development environment.^[2]

The Windsurf Editor launched in November 2024, introducing the Cascade agent, which could understand a project's wider context and carry out multi-file changes in response to natural-language instructions. Windsurf competed directly with Cursor and GitHub Copilot in the fast-growing market for AI coding tools, and by mid-2025 the company had reported strong revenue growth and enterprise adoption.^[2][3]

In April 2025, OpenAI entered talks to acquire Windsurf for approximately US$3 billion — a deal that, if completed, would have been one of the largest AI acquisitions of the year. The talks ended without agreement, and on 11 July 2025 Google announced that it would hire Windsurf chief executive Varun Mohan, co-founder Douglas Chen and a group of senior engineers into Google DeepMind, while paying US$2.4 billion for a non-exclusive licence to the company's technology. The structure — talent and licensing rather than an outright purchase — drew attention because it avoided the regulatory review that a full acquisition would have triggered.^[2][3]

Three days later, on 14 July 2025, Cognition announced a definitive agreement to acquire Windsurf's intellectual property, product, trademark, brand and remaining staff. Reports placed the purchase price at roughly US$250 million, and Cognition said all employees would share in the outcome. Cognition, the maker of the autonomous software engineer Devin, operated Windsurf as a separate brand for around eleven months before renaming it Devin Desktop on 2 June 2026 through an automatic update; the windsurf.com domain now redirects to Cognition's Devin website, and the company's in-editor agent was renamed Devin Local. Existing plans, pricing and extensions were carried over unchanged.^[1][3]

Key Concepts

Windsurf belongs to the category of agentic development environments. Its defining feature, the Cascade agent, maintains awareness of the whole project — files, dependencies and recent edits — and can perform tasks such as adding a feature across several files, running terminal commands, reading error output and iterating until the task succeeds, with the developer reviewing and approving changes.^[1][2]

The editor was also associated with model independence: users could route requests to leading third-party models such as Anthropic's Claude, OpenAI's GPT or Google's Gemini, while Codeium and later Cognition developed in-house models — the SWE-1 family — optimised for the speed and reliability of day-to-day software engineering tasks rather than headline benchmark scores.^[1]

The 2025 transaction also popularised a "reverse acquihire" template: rather than buying a company, large technology firms hire its key staff and take a licence to its technology. The pattern was subsequently discussed as a way for acquirers to obtain talent and intellectual property without triggering merger control, and it became a subject of debate among competition regulators in the United States and Europe.^[2][3]

Applications and Impact

Windsurf was adopted by professional developers, start-ups and large enterprises for tasks ranging from routine refactoring to building new features and prototypes. In the broader market it was considered one of the three main challengers — with Cursor and GitHub Copilot — in the AI-assisted coding category, and its lifetime as an independent company illustrated both the speed of AI-fuelled growth and the fragility of start-up ownership in the sector.^[2]

The company's split — founders to Google, products to Cognition — intensified an industry-wide debate about talent concentration at a handful of frontier laboratories, and about what happens to users of a development tool when its maker changes hands. Cognition has continued to offer the editor to enterprises as part of a portfolio that pairs a cloud-based agent (Devin) with a desktop environment for individual developers.^[1]

>See Also

• Cursor (Code Editor)
• GitHub Copilot
• Claude Code
• Vibe Coding
• Lovable