Windsurf

Windsurf (formerly Codeium) is an AI-native code editor that positions itself between Cursor's AI-first approach and GitHub Copilot's augmentation model. Its standout feature is Cascade — a multi-step reasoning engine that can understand complex requirements and implement changes across multiple files autonomously.

What it does

Windsurf is a full code editor (VS Code fork) with deeply integrated AI capabilities. It provides code completion, chat-based assistance, and Cascade — an autonomous coding agent that can plan and execute multi-step changes across your entire codebase. You describe what you want, and Cascade breaks the task into steps, edits multiple files, runs tests, and iterates until the implementation is complete.

How it works in practice

The code completion works at the line and function level, similar to Copilot. The chat interface lets you ask questions about your codebase and request changes. But Cascade is where Windsurf differentiates itself. Describe a feature: "Add user authentication with Google OAuth, session management, and a protected dashboard route." Cascade analyses your project structure, identifies the relevant files, creates a multi-step plan, and implements the changes — creating new files, modifying existing ones, and updating configurations.

Windsurf indexes your entire codebase for context, so Cascade understands your project's architecture, coding patterns, and dependencies. This contextual awareness means it makes changes that are consistent with your existing code.

Where it excels

Cascade's autonomous multi-step execution is genuinely impressive for feature implementation. Rather than suggesting code for you to paste, it plans and executes independently. For prototyping, adding standard features, and refactoring, this agentic approach saves significant time.

The free tier is also the most generous among AI code editors. Unlimited basic completions and generous Cascade usage make Windsurf accessible for evaluation and casual use.

Where it falls short

Cascade can make architectural decisions you disagree with. When implementing complex features autonomously, it may choose patterns or libraries that do not match your preferences. Reviewing AI-generated changes across multiple files requires careful attention, and undoing unwanted changes can be tedious.

The extension ecosystem is smaller than VS Code or Cursor, and some popular extensions may not work perfectly in the Windsurf environment.

The business case

For developers who want an AI editor that can handle entire features autonomously, Windsurf's Cascade is the most agentic option available. The generous free tier makes it easy to evaluate. For teams already invested in Cursor or VS Code with Copilot, switching has a real cost — but Windsurf's autonomous capabilities may justify it for certain workflows.