URLSession is Apple's built-in networking API. Alamofire is the popular third-party wrapper that historically provided a better DX.
| Feature | Alamofire | URLSession |
|---|---|---|
| Bundled with iOS | No (SPM) | Yes |
| async/await support | Yes | Yes |
| Interceptors / retries | Built-in | Roll your own |
| Binary size impact | +~1 MB | Zero |
| Vendor dependency | Yes | None |
URLSession alone in 2026 — Swift async/await closed most of the ergonomics gap. Add Alamofire only when you need its specific features (interceptors, retriers, multipart helpers) and accept the dependency.
Less so than 5 years ago. URLSession with async/await covers most needs natively. Alamofire's edge is interceptors and convenience helpers.
No — it's widely used and approved. But every dependency adds binary size and maintenance risk.