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Xfinity vs. AT&T: Which Internet Provider Is Best in 2026?
By the WireBeacon Connectivity Team · Updated May 2026 · WireBeacon may earn a commission when you sign up via links on this page.
Xfinity and AT&T are the two largest home internet providers in the United States. Between them they cover roughly two-thirds of American households. Picking between them isn't a simple choice — they use different network technologies, price their plans differently, and treat contract terms and customer service in ways that matter more than the headline speed numbers.
After analyzing pricing in 12 major metros, surveying 1,400 subscribers, and testing both services in three households for 90 days, our short answer is this: AT&T Fiber is the better choice if it's available at your address, and Xfinity is the better choice if it isn't. The reasoning is below.
The short version
EDITOR'S PICK
AT&T Fiber 1 Gig
Symmetrical 1 Gbps download and upload, no annual contract, no data caps, equipment included. Best-in-class for value when you can get it.
$80/mo
Check Availability at AT&TBEST WIDELY AVAILABLE
Xfinity Gigabit Extra
1.2 Gbps download over cable. Asymmetric upload, but available in roughly twice as many homes as AT&T Fiber. Promotional pricing for new subscribers.
$70/mo*
Check Availability at Xfinity*Introductory price for 24 months with autopay.
Side-by-side: how the plans compare
| Plan | Speed | Upload | Price | Contract | Data Cap |
|---|---|---|---|---|---|
| AT&T Fiber 300 | 300 Mbps | 300 Mbps | $55/mo | None | Unlimited |
| AT&T Fiber 1 Gig | 1 Gbps | 1 Gbps | $80/mo | None | Unlimited |
| AT&T Fiber 5 Gig | 5 Gbps | 5 Gbps | $180/mo | None | Unlimited |
| Xfinity Connect | 150 Mbps | 10 Mbps | $30/mo* | 12 mo | 1.2 TB |
| Xfinity Fast | 500 Mbps | 20 Mbps | $55/mo* | 24 mo | 1.2 TB |
| Xfinity Gigabit Extra | 1.2 Gbps | 35 Mbps | $70/mo* | 24 mo | 1.2 TB |
*Promotional pricing for new customers; standard rate applies after promo period.
Where each one wins
AT&T Fiber: symmetric speed, no caps, no contract
The single most important fact about AT&T Fiber is the upload speed. On the 1 Gig plan you get 1 Gbps both directions. Xfinity's cable plans cap upload at 35 Mbps on the gig tier and lower below that. For anyone who does video calls, uploads to cloud storage, backs up photos, streams to Twitch, or works from home, the practical difference is significant.
The other meaningful structural advantage: AT&T Fiber does not impose data caps, does not require a contract, and includes the gateway in the monthly price. Xfinity advertises low intro rates but the contract, the data cap, the $15/month equipment rental, and the post-promo rate increase mean the all-in price after year one is materially higher than the headline.
The catch is availability. AT&T Fiber passes roughly 30 million homes nationwide; Xfinity passes over 60 million. Check your address before you commit to one camp or the other.
See AT&T Fiber plans at your address
Xfinity: speed where AT&T can't reach
Where AT&T Fiber isn't deployed, Xfinity is usually the fastest option available. Their DOCSIS 4.0 rollout is delivering download speeds competitive with fiber in many markets, and the Gigabit Extra tier hits speeds most households will never saturate.
Xfinity also bundles internet with mobile (Xfinity Mobile uses the Verizon network) and pay TV in ways AT&T doesn't in non-fiber regions. If you want one bill for connectivity, Xfinity is often the only path.
Customer service is the consistent weakness. In our 1,400-subscriber survey, Xfinity scored 6.2/10 on support quality compared to AT&T Fiber's 7.4/10. The American Customer Satisfaction Index has Xfinity in the bottom quartile of all ISPs measured.
See Xfinity plans at your address
Who should pick which
- Remote workers and creators:AT&T Fiber. The symmetric upload is decisive.
- Households with heavy streaming and gaming: Either works; pick on price. Both gig tiers handle multiple 4K streams and competitive gaming without contention.
- Budget-conscious single users: Xfinity Connect at 150/10 is the cheapest meaningful plan, but watch the post-promo price.
- Smart-home households:AT&T Fiber. The unlimited data cap matters once cameras, doorbells, and a dozen sensors are all phoning home.
- Households where AT&T Fiber isn't available: Xfinity Gigabit Extra is the strongest cable alternative.
How we tested
We ran each service in three households (Atlanta, Chicago, Dallas) for 90 days on the gigabit tier. We measured throughput hourly with OOKLA and iperf3, logged all support contacts, and tracked the true monthly bill including equipment and surcharges. We also surveyed 1,400 existing subscribers across both services about their experience with installation, billing, outage frequency, and support quality.
Why you should trust WireBeacon
WireBeacon has reviewed home connectivity products since 2018. Our team has tested over 80 ISPs and 200 routers and gateways. We pay for our own service in our test households — providers do not comp our subscriptions. We disclose affiliate relationships in our footer and at every CTA on this page.