The Ultimate Agentic IDE Showdown: Antigravity vs. Windsurf vs. Cursor

2025 is the year of the Agentic IDE.
Gone are the days of simple autocomplete. Today's IDEs can plan, execute, and debug entire features.

But with so many options, which one should you choose?
We pitted the heavyweights against each other: Google Antigravity, Windsurf (by Codeium), Cursor, and GitHub Copilot Workspace.

The Contenders

1. Google Antigravity: The new king on the block. Built on Gemini 3 Pro with a massive 2M token context window.
2. Cursor: The pioneer. Famous for its “Composer” mode and smooth UX.
3. Windsurf: The “Flow” master. Known for its deep context awareness and “Cascade” flow.
4. Copilot Workspace: The planner. Best for starting tasks from GitHub Issues.

Round 1: Context Window

* Antigravity: 2 Million Tokens (Gemini 3 Pro).
* Cursor: ~200k Tokens (Claude 3.5 Sonnet).
* Windsurf: ~128k Tokens (GPT-4o / Custom).
* Copilot: ~128k Tokens.

Winner: Antigravity.
It's not even close. Antigravity can hold your entire repo, documentation, and dependencies in memory. The others rely on RAG (Retrieval Augmented Generation), which can miss things.

Round 2: Agentic Capabilities

* Antigravity: Full Mission Control. Can spawn multiple agents (Builder, Tester, DevOps) that run in parallel. Has local runtime for terminal/browser.
* Windsurf: “Cascade” allows for multi-step reasoning, but it's linear.
* Cursor: “Composer” can edit multiple files, but lacks true autonomous agents that run in the background.
* Copilot: Great for planning, but execution is limited to code edits.

Winner: Antigravity.
Mission Control is a generation ahead of the competition.

Round 3: User Experience (UX)

* Cursor: The most polished. It feels like VS Code but faster. The “Tab” to accept diffs is addictive.
* Windsurf: “Flow Mode” is beautiful, but the interface can feel cluttered.
* Antigravity: Powerful but complex. Mission Control has a learning curve.
* Copilot: Browser-based interface is clunky for real coding.

Winner: Cursor.
If you just want a better editor, Cursor is still the smoothest experience.

Round 4: Ecosystem Integration

* Antigravity: Deep integration with Google Cloud, Firebase, and Android.
* Copilot: Native GitHub integration (Issues, PRs).
* Cursor/Windsurf: Agnostic.

Winner: Tie (Antigravity/Copilot).
Depends on your stack. If you use GitHub, Copilot is great. If you use GCP, Antigravity is a no-brainer.

The Verdict

* Best for Power Users & Architects: Google Antigravity. The context window and agents are unmatched.
* Best for Solo Devs & Speed: Cursor. It's fast, fluid, and intuitive.
* Best for Enterprise Teams: Antigravity. The “Teams” features and security controls are superior.
* Best for Project Managers: Copilot Workspace. Great for turning tickets into specs.

At BYS Marketing, we have standardized on Antigravity for complex projects and Cursor for quick scripts.

—

Need help choosing your AI stack?
Contact BYS Marketing. We help engineering teams select and implement the right tools.