Cursor vs Antigravity vs Windsurf: Fast or Reliable?

The most telling data point comes from a multi-IDE test described by The Gray Cat. In that test, only Cursor completed every task. Other tools either failed, got blocked by rate limits, or, worse, claimed success when they hadn't delivered. That false-completion issue is a silent productivity killer. You think you're done, then the build breaks.

Antigravity's reliability is a genuine point of contention. The Gray Cat watched it fail on complex multi-file work because of autonomous model switching: the agent picks a model, makes a wrong assumption about what that model can handle, and the entire refactor turns into a mess of hallucinated changes. Nathan Covey compared Antigravity and Cursor on a real project and found no significant reliability difference. Eric Tech reported that Antigravity's output is highly accurate when you follow its recommended workflow: write prompts, use plan mode to generate a task list, let the LLM build, test with the browser agent, then iterate.

If a tool only works when you follow a rigid five-step ritual, it's not reliable. It's a promising prototype. Cursor's advantage is that it handles unexpected situations gracefully. According to Nathan Covey, that consistency across a wide range of coding tasks is why Cursor is the current market leader.

On pure speed, Antigravity has every right to brag. Eric Tech and Your Average Tech Bro both highlighted its parallel agent manager and built-in browser automation. For simple, well-defined tasks (a single bug fix, a small UI change, a quick prototype), Antigravity can dispatch multiple agents at once and verify the result in-browser, all without you lifting a finger. That is faster than Cursor's more deliberate, step-by-step approach.

But speed without scope control causes problems. When you ask Antigravity for a change that spans multiple interconnected files, the parallel agents start stepping on each other. The autonomous model switching kicks in at the worst possible moment, and the whole task derails. The Gray Cat's recommended workflow exists precisely because you need to constrain Antigravity's enthusiasm. Cursor doesn't need that kind of babysitting. Cursor finishes long, complex tasks reliably, even if it isn't the fastest in a single sprint.

Windsurf's value proposition is obvious: it's cheap, and the freemium model gives you a lot of initial credits. But a cheap tool that stalls at the critical moment isn't worth much. According to The Gray Cat, Windsurf's aggressive rate limiting kicked in mid-task with 85% of credits still available. That mid-task block derails real work.

Antigravity, for all its flaws, doesn't pull that nonsense. Both The Gray Cat and Nathan Covey said Antigravity's free and Pro plans are generous enough to avoid mid-task interruptions. That matters for budget-conscious developers. Cursor doesn't have this problem either, and Windsurf's low price tag feels less attractive once you factor in the risk of being locked out at 3 AM.

Antigravity's free tier is more generous than Cursor's, which makes it the easy recommendation for hobbyists and students. Nathan Covey and The Gray Cat agreed on that. But the pricing decision gets murkier when you start optimizing for model access.

Your Average Tech Bro says you should run two separate subscriptions: an AI code editor (Cursor or Antigravity) plus a model provider like Codeex or Claude Code. This gives you maximum model choice and editor features, at the cost of handling two bills. The Gray Cat argues that a single high-tier plan, Claude Code Max at $100/month, beats every IDE combination for pure reliability.

Then there's Google's $250/month plan. It bundles Antigravity with best-in-class video generation models and YouTube Premium. If you're a content creator who codes, that bundle is a compelling media-plus-coding package. But you're not buying it for Antigravity alone. The editor is a side effect.

Cursor offers a much wider selection of AI models, including OpenAI models that Antigravity doesn't have. That's a concrete advantage if you have a preferred model or need to test different ones. Nathan Covey and The Gray Cat both noted this.

Antigravity's automatic model switching is meant to save you that decision. In practice, it can cause complete task failure when the agent misjudges a model's capabilities. You're better off having the explicit choice, even if it means thinking for a second longer.

Nobody seriously contests that Cursor is the leading AI IDE right now. Nathan Covey, The Gray Cat, and Your Average Tech Bro all land on that conclusion. Antigravity is an emerging competitor, strong and innovative, but not mature enough to handle everything you throw at it.

The long-term question is whether Google can turn Antigravity into a Cursor killer. Google's resources and bundling power are real, but so is its history of abandoning products. The Gray Cat's advice: avoid Antigravity for complex work today and wait to see if it improves.

If you need a tool for production coding, buy Cursor. If you're hacking on side projects with well-scoped tasks, Antigravity's speed and free tier are attractive. Windsurf, despite the low price, costs you more in frustration than it saves.