How We Ran a Real AI Code Editor Comparison
To cut through marketing buzz, the month-long test started with a hard reset: uninstalling VS Code and living entirely inside three AI-first IDEs—Cursor, Google Antigravity, and Windsurf. The goal was simple: find the best AI IDE for daily work, not just impressive demos. Projects included routine feature development, bug-hunting across large codebases, and a greenfield build of a real-time finance dashboard. Each tool was evaluated on three fronts: usability for a VS Code-native developer, depth and reliability of AI assistance, and how well it supported an agentic workflow over time rather than in one-off prompts. VS Code served as the mental baseline: fast, predictable, extension-rich, but fundamentally non-agentic. Against that, the AI editors had to prove they could handle complex refactors, long debugging sessions, and multi-file changes without turning into a chat-driven distraction.
Cursor: Familiar Powerhouse with Mission-Control Ambitions
Cursor felt immediately approachable because it is built on a VS Code foundation, so shortcuts, extensions, and layout barely needed adjustment. Its biggest strength is codebase handling: the context engine indexes large projects sharply, making tracing a bug across multiple folders feel natural instead of tedious. Multi-file edits and dependency-aware refactors are where Cursor shines. With version 3.0, it moves beyond smart autocomplete into a mission-control style AI code editor. A dedicated multi-agent pane and revamped Composer let you spin up parallel workflows, from long-running refactors to exploratory debugging. The seamless cloud handoff is a standout: start a huge refactor on one machine, close the laptop, and pick up later elsewhere while the agent keeps working. The trade-off: on long debugging sessions, the AI sometimes falls into repetitive logic loops, forcing you to intervene or reset its context to keep progress moving.
Google Antigravity: Radical Agents, Imperfect Logic
Antigravity doesn’t just augment a text editor; it rethinks it around agents. The interface splits into a traditional Editor view and an Agent Manager where multiple agents can coordinate tasks across terminal, editor, and a built-in browser. For the real-time finance dashboard, Antigravity first produced a detailed plan, waited for approval, then launched parallel agents that wrote code, ran it, and even opened the dashboard in its embedded browser, interacting with charts and returning screenshots and recordings. This is autonomous coding at an almost product-manager level of structure. However, the underlying Gemini 3.1 Pro model, while fast and capable with large contexts, still lags Anthropic’s Claude on deep, intricate logic. For tricky math or complex data workflows, it sometimes stalls or makes reasoning errors, requiring manual correction or switching an agent’s model. As a new platform, it also shows performance bugs, layout quirks, lag when multiple agents run, and cluttered browser tabs that don’t clean themselves up.
Windsurf: Frictionless Agent Workflows for Everyday Shipping
Windsurf approaches AI-native development like a project manager embedded in your IDE. Also built on VS Code architecture, it preserves keybindings, extensions, and muscle memory, making migration nearly painless. The headline feature in Windsurf 2.0 is the Agent Command Center: a Kanban-style dashboard inside the editor that organizes AI tasks into columns like Running, Blocked, and Ready. Instead of losing work in a single linear chat thread, you get a visual pipeline of agent tasks. This makes it far easier to juggle refactors, bug hunts, and exploratory spikes without context chaos. Practically, Windsurf becomes a kind of team lead: you shape work into tasks, the agents execute, and you supervise. Compared with Cursor’s mission-control feel and Antigravity’s radical agent browser, Windsurf focuses on making autonomous coding feel boringly reliable and trackable, which matters more than flashy demos when you’re trying to ship features every day.
VS Code and JetBrains: Baselines, Independence, and the Clear Winner
VS Code remains the baseline: fast, familiar, and extension-rich, but it wasn’t built around agents. Adding AI via extensions still feels like bolting a chatbot onto a text editor, not rethinking the workflow. JetBrains, meanwhile, sits slightly outside this head-to-head test but matters for long-term strategy. It pitches itself as the only major independent AI tooling vendor, not tied to a single hyperscaler. Its Junie agent defaults to Gemini Flash yet can work with Anthropic and OpenAI models, governed centrally via JetBrains Central. Across a full month of real-world use, the editor that most consistently improved velocity, reduced cognitive overhead, and kept AI work organized was Windsurf. Cursor remains a powerhouse for deep codebase navigation, and Antigravity showcases the future of multi-agent orchestration, but Windsurf’s frictionless, Kanban-like agent workflow made it the best AI IDE for developers who need to ship reliably today.