Artificial Intelligence · Profile from AI Research Companion
Windsurf (formerly Codeium, originally Exafunction)
The AI coding company that began in 2021 as Exafunction, a GPU-virtualisation start-up, pivoted in mid-2022 to Codeium, a free AI autocomplete tool with a self-hosted enterprise edition, and in November 2024 launched the Windsurf editor, an AI-native fork of VS Code built around the Cascade agent. Renamed Windsurf in April 2025, it claimed ~$100m of annual recurring revenue (ARR) that month (reported) and agreed to be bought by OpenAI for ~$3bn (reported). The summer of 2025 then turned it into the defining case of platform and deal risk in AI: Anthropic cut most of its first-party Claude capacity (3 June 2025); the OpenAI deal stalled over Microsoft's rights to OpenAI's IP and lapsed on 11 July 2025; that same day Google paid ~$2.4bn for a non-exclusive licence and hired CEO Varun Mohan, co-founder Douglas Chen and some researchers (reported); and on 14 July 2025 Cognition AI agreed to buy everything that remained — $82m of ARR, >350 enterprise customers and ~230 staff (Cognition; staff count reported). Cognition renamed the editor Devin Desktop on 2 June 2026 (reported), ending the Windsurf brand.
At a glance
- Founded
- 2021, Mountain View, California, as Exafunction, by Varun Mohan (CEO) and Douglas Chen, MIT classmates (reported)
- Headquarters
- Mountain View, California (until the 2025 sale); now part of Cognition, San Francisco
- Ownership / structure
- Private, venture-backed until July 2025; investors included Greenoaks, Founders Fund, Kleiner Perkins and General Catalyst. Since July 2025 a wholly owned part of Cognition AI (price not disclosed)
- Leadership
- Varun Mohan (CEO to July 2025) and Douglas Chen (co-founder), both to Google DeepMind (July 2025); Jeff Wang (head of business, interim CEO from 11 July 2025, then an enterprise leader at Cognition, reported); Graham Moreno (president, reported)
- AI products
- Codeium extensions (autocomplete and chat for VS Code, JetBrains and other editors, 2022–); Codeium Enterprise (self-hosted, 2023–); Windsurf Editor with Cascade agent (November 2024); SWE-1, SWE-1-lite and SWE-1-mini models (May 2025); Devin Desktop (renamed by Cognition, June 2026, reported)
- Scale
- ~$100m ARR (company claim, April 2025, reported); $82m ARR and >350 enterprise customers with enterprise ARR doubling quarter over quarter (Cognition, 14 July 2025); ~250 staff before the Google deal (reported, verify), ~230 after (Cognition laid off ~30 on 1 August 2025 and offered the remaining ~200 buyouts; The Information, re-checked Nov 2026)
- Capital raised / valuation
- $25m Series A led by Greenoaks (April 2022); ~$65m Series B led by Kleiner Perkins (reported, verify date and ~$500m valuation); $150m Series C led by General Catalyst at $1.25bn (29 August 2024); ~$243m in total (TechCrunch). Exit value: ~$3bn OpenAI offer (lapsed); ~$2.4bn Google licence fee; undisclosed Cognition price
- Key partnerships
- Anthropic (Claude models behind Cascade; capacity cut June 2025, restored after Cognition's purchase, reported); OpenAI and Google models in the editor; VS Code open-source base (Microsoft)
- Signature moves (incl. failures)
- Exafunction founding and the Codeium pivot (2021–22); the Series C and the enterprise self-hosting bet (2024); the Windsurf editor and Cascade (2024); the rebrand and SWE-1 models (2025); Anthropic's Claude cut (2025, failure); the OpenAI deal collapse (2025, failure); the Google licence-and-hire (2025); the sale to Cognition and the road to Devin Desktop (2025–26)
8 strategic moves analysed
Each one gets a full strategy file in the companion: context, the decision, the financing, what happened, and the lesson.
2021
Exafunction Founding and the Codeium Pivot
Founding / pivot
2024
Series C and the Enterprise Self Hosting Bet
Funding round / go-to-market strategy
2024
Windsurf Editor and Cascade
Launch
2025
Anthropic Cuts Claude Access
Supplier dispute (a move made against Windsurf, and its response) — a failure of supplier management
2025
Google Licence and Hire
Licence-and-hire (as the licensor and the company losing its leaders)
2025
OpenAI Deal Collapse
Acquisition (as target) — failed
2025
Rebrand and SWE 1 Models
Rebrand / model release
2025
Sale to Cognition and Devin Desktop
Acquisition (as target) / brand retirement