AT&T Fiber vs Xfinity
America's two biggest ISPs go head-to-head on real-world speed, reliability, and value.
The Verdict
Winner: AT&T Fiber
AT&T Fiber
★★★★½ (4.5/5) · From $55/mo
AT&T Fiber is the better choice if it's available in your area — symmetrical speeds and no data caps.
Xfinity
★★★★☆ (4.2/5) · From $30/mo
Xfinity wins on availability and introductory price, but watch for data caps and contract terms.
Spec Comparison
| Spec | AT&T Fiber | Xfinity |
|---|---|---|
| Technology | Fiber | Cable (DOCSIS 3.1) |
| Max download speed | 5 Gbps | 2 Gbps |
| Upload speed | Symmetrical | Asymmetrical (much slower) |
| Data cap | None | 1.2 TB/month on most plans |