Windsurf (formerly Codeium)
AI-first IDE with agentic Cascade engine - rebranded from Codeium
Windsurf (Cognition AI) · Code Assistance
Quick Answer
Windsurf (formerly Codeium) is ai-first ide with agentic cascade engine - rebranded from codeium, made by Windsurf (Cognition AI). It offers a free tier with paid upgrades. Key uses: Code completion, Agentic coding, Refactoring.
Last updated:
Users
1.5M+ developers (2026 est.)
Valuation
~$250M acquisition price (Dec 2025)
What is Windsurf (formerly Codeium)?
Codeium rebranded to Windsurf in late 2024, launching an AI-first IDE (fork of VS Code) with Cascade - an agentic engine that can autonomously plan and execute multi-step coding tasks. Acquired by Cognition AI (makers of Devin) in May 2025 for $3B.
What's new in Windsurf (formerly Codeium) in 2026?
Acquired by Cognition AI for ~$250M Dec 2025 (NOT $3B — that was Cognition's own valuation); rebranding to Devin Desktop (the merged IDE); SWE-1.5/SWE-1.6 coding models (Jun 2026); Cascade agentic engine powers Windsurf and Devin Desktop
What can you do with Windsurf (formerly Codeium)?
- Code completion
- Agentic coding
- Refactoring
- Multi-file edits
Pros
- Cascade agentic engine
- Free tier available
- 70+ languages
- VS Code compatible
Cons
- New product, less mature than Cursor
- Cognition acquisition uncertainty
What are the best alternatives to Windsurf (formerly Codeium)?
Compare Windsurf (formerly Codeium) Head-to-Head
Frequently Asked Questions about Windsurf (formerly Codeium)
Is Windsurf (formerly Codeium) free?
Windsurf (formerly Codeium) offers a free tier with limited usage. Paid plans unlock additional features.
What is Windsurf (formerly Codeium) used for?
Windsurf (formerly Codeium) is used for: Code completion, Agentic coding, Refactoring, Multi-file edits.
What are the best alternatives to Windsurf (formerly Codeium)?
Top alternatives to Windsurf (formerly Codeium) include GitHub Copilot, Cursor, Tabnine, Cursor.