Codeium (Windsurf)
AI Code Assistance & Agentic IDE
Valuation
Acquired by OpenAI for $3B (Jun 2025)
Total Funding
$150M+ raised
About Codeium (Windsurf)
Codeium built the AI coding assistant Codeium and the agentic IDE Windsurf. Known for its generous free tier and fast autocomplete, Codeium grew to 800,000+ developers before OpenAI acquired the company for $3B in June 2025 — marking one of the largest AI acquisitions. Windsurf's Cascade agent autonomously edits code across entire repositories.
Company History
Codeium started as Exafunction in 2021, building GPU utilisation software. After pivoting to AI coding in 2022, it differentiated by offering a genuinely free tier with no limits — directly undercutting GitHub Copilot. Windsurf (Nov 2024) introduced the concept of 'Flows' — persistent agentic context across an entire coding session. The $3B OpenAI acquisition in June 2025 was one of the largest AI industry M&A deals, giving OpenAI a popular consumer coding IDE to compete with Cursor and GitHub Copilot.
Company Timeline
2021
Founded as Exafunction, building GPU infrastructure
2022
Pivoted to AI coding; Codeium launched free vs GitHub Copilot
2023
100K+ developers; VS Code / JetBrains extensions
Nov 2024
Windsurf IDE launched — agentic coding with Cascade agent
2025
800K+ developers; Series C at $1.25B valuation
Jun 2025
OpenAI acquires Codeium/Windsurf for $3B
Products & Services
Company Details
Focus Area
AI Code Assistance & Agentic IDE
Stage
Founded
2021
Headquarters
Mountain View, CA
Financial Overview
Total Funding
$150M+ raised
Valuation
Acquired by OpenAI for $3B (Jun 2025)
Key Investors
Key People
- Varun Mohan (CEO/Co-founder)
- Douglas Chen (CTO/Co-founder)