Tech Walkthroughs

What is Windsurf?

Windsurf is an AI-first code editor built by Codeium, launched in late 2024. Like Cursor, it's built on a VS Code fork - but its core architectural bet is different: where Cursor built around an IDE-first experience with the Composer Agent, Windsurf built around Cascade, an agentic engine designed to maintain session-level awareness of your entire coding history across a conversation. The result is an AI that feels like it genuinely remembers what you were doing 30 messages ago - because it does.

The Cascade engine - what makes Windsurf different

Cascade is Windsurf's flagship feature and the thing that separates it from Cursor in practice. When you work with Cascade, it builds a running model of your current session: what files you've edited, what the failing tests were, what you asked it to do 10 prompts back, and what it changed. This session memory means you never have to re-explain context.

In our testing, we gave Cascade a 5-step refactor task involving 4 files and a failing test suite. Cascade planned the sequence, executed steps 1–3 correctly, identified the test failure on step 4, diagnosed the root cause by referencing a change it had made in step 2 (without us pointing it out), and self-corrected. The session-level awareness was noticeably better than Cursor's Composer in keeping a coherent multi-step plan together over a long session.

Where Cascade beats Cursor's Composer

• Long-session coherence: Cascade remembers everything in the current session. Cursor's Composer occasionally loses context on very long multi-step tasks and needs re-prompting. For large refactors spanning 20+ exchanges, Cascade feels more consistent.
• Large codebase context: On repos with 150k+ lines, Cascade's codebase indexing and retrieval was more accurate in our tests - finding the right files and functions more reliably than Cursor's @codebase.
• Free tier quality: Windsurf's free Cascade Base is genuinely good. This is not a limited demo - it's a real agentic engine on a less powerful model. For developers on a budget, this changes the calculation entirely.

Where Cursor's Composer still leads

• Tab completion: Cursor's multi-line Tab prediction - which predicts your next intended edit across multiple lines - is still noticeably ahead of Windsurf's autocomplete. Day-to-day, this means more keystrokes saved per hour on Cursor.
• Model flexibility: Cursor lets you switch between Claude 3.5 Sonnet, GPT-4o, and Cursor's own models mid-session. Windsurf's model selection is more limited on the free and Pro tiers.
• Ecosystem maturity: Cursor has a larger community, more third-party guides, and more edge-case coverage for uncommon languages and frameworks.

Pricing

• Free tier: Cascade Base model, limited monthly uses. Genuinely useful for daily work - the most capable free AI coding assistant available in 2026.
• Pro ($15/month): Cascade Pro model (more capable), higher monthly usage limits, priority access. $5/month cheaper than Cursor Pro.
• Teams ($35/user/month): Admin controls, usage monitoring, team management. $5/seat/month cheaper than Cursor Business.

Pricing vs. competitors

Who should use Windsurf?

• ✅ Developers who want to try agentic AI coding for free before committing to a paid plan
• ✅ Teams running Cursor who want to cut per-seat cost without sacrificing agentic capability
• ✅ Developers doing large, long-horizon refactors where session-level memory matters most
• ✅ VS Code users who want the most capable free option available
• ❌ JetBrains users - Windsurf is VS Code only, like Cursor
• ❌ Developers who prioritize Tab completion quality above all else - Cursor still leads here
• ❌ Enterprise teams that need the most mature ecosystem and broadest model choice

FAQ

Is Windsurf free actually usable for real work?

Yes - in 2026, Windsurf's free tier is the most capable free AI coding assistant available. The Cascade Base model can plan multi-step tasks, edit multiple files, and maintain session context. The usage limits exist (you'll hit them if you're running agents all day), but for developers doing moderate daily coding, the free tier covers most use cases. Start here before paying for anything.

Should I switch from Cursor to Windsurf to save $5/month?

If you're a heavy Cursor user who relies on Tab completion and model flexibility (switching between Claude and GPT-4o), stay on Cursor - the $5/month difference isn't worth disrupting your workflow. If you rarely use Tab prediction and mostly work through the Composer/Cascade agent interface, try Windsurf Pro. The long-session coherence may actually improve your experience on complex tasks.

Does Windsurf work with all VS Code extensions?

Windsurf is a VS Code fork, so most extensions install and work correctly. We tested 20 common extensions (ESLint, Prettier, GitLens, Docker, Tailwind CSS IntelliSense) - 19 worked without any configuration. Rare edge cases exist with extensions that hook deeply into the VS Code internals, but these are uncommon for standard development workflows.