Windsurf

Overview

Windsurf is an AI code editor originally developed by Codeium. After a complex acquisition saga, it was acquired by Cognition AI in December 2025. In 2026, Windsurf is centered on the Cascade engine — an agentic AI system that understands entire codebases, suggests multi-file edits, and runs terminal commands. It ranked #1 in the LogRocket AI Dev Tool Power Rankings as of February 2026.

Acquisition History

• OpenAI's $3B acquisition collapsed due to Microsoft IP disputes
• Google hired the founding team in a $2.4B licensing deal
• Cognition AI (Devin creator) acquired the remaining company for ~$250M (December 2025)

Key Features

Cascade Engine

Core agent understanding entire codebases, suggesting multi-file edits, running terminal commands, and acting as a coding partner.

GPT-5.4 Support

Supports GPT-5.4 with adjustable "reasoning effort" from Low to Extra High.

Enterprise Adoption

• 1M+ active users (as of March 2026)
• 70M+ lines of code written by AI daily
• 59% of Fortune 500 companies use Windsurf

Pricing

Plan	Monthly	Highlights
Free	$0	Basic Cascade
Pro	$15	Extended usage, premium models
Teams	$35/user	Team features
Enterprise	Contact	SSO, audit, on-prem

Strengths

• ✅ Powerful Cascade engine
• ✅ GPT-5.4 with reasoning effort control
• ✅ 59% of Fortune 500 adopted
• ✅ Cognition AI ownership (Devin synergy expected)
• ✅ Speed — 70M lines of code/day
• ✅ #1 in LogRocket AI Dev Tool rankings

Weaknesses

• ❌ Uncertain future after acquisition saga
• ❌ Smaller ecosystem than Cursor
• ❌ Limited Japanese documentation

Official Resources

• Website: https://windsurf.com
• Cognition AI: https://cognition.ai
• Legacy Codeium: https://codeium.com