Starting Price
~$40/mo (promotional)
~$35/mo (promotional)
Max Download Speed
2 Gbps (select markets)
10 Gbps (select markets)
Service Availability
~18 states, ~6.5M homes
~40+ states, ~32M+ homes
No-Contract Option
Yes, available
Yes, available
Data Cap
1.25 TB/mo (overage fees apply)
1.2 TB/mo (unlimited add-on ~$30/mo)
Equipment Fee
~$14/mo modem rental
~$15/mo gateway rental
Own Modem Option
Yes, compatible modems allowed
Yes, compatible modems allowed
Low-Income Program
Cox Connect2Compete (~$10/mo)
Internet Essentials (~$10/mo)
Upload Speed (top tier)
Up to 2 Gbps (fiber areas)
Up to 6 Gbps (fiber areas)
Mobile App
Cox app — basic features
Xfinity app — full modem control & hotspots
Wi-Fi Hotspot Network
Limited hotspot network
Millions of Xfinity hotspots nationwide
Bundle Options
Internet + TV + Phone
Internet + TV + Phone + Mobile
Worth knowing
- Xfinity is owned by Comcast, making it the largest residential ISP in the US by subscriber count.
- Cox is one of the last major privately held cable companies — it's still family-owned by the Cox family.
- Both ISPs regularly appear near the bottom of customer satisfaction surveys, so neither is winning any popularity contests.
- Xfinity's 10 Gbps plan is real, but you'll need their XGS-PON fiber infrastructure — only in select cities.
- Cox's data cap of 1.25 TB is slightly more generous than Xfinity's 1.2 TB, though neither is unlimited by default.
Cox is still technically a private, family-run company — which means it answers to the Cox family, not Wall Street. Whether that makes the hold music feel more personal is debatable.
If you wantYou want the fastest possible speeds and widest availability
Xfinity's 10 Gbps ceiling and 32M+ home footprint make it the clear winner for raw performance and reach.
→ Pick Xfinity If you wantYou live in a Cox service area and want slightly better data caps
Cox's 1.25 TB cap and reputation for consistent regional reliability give it a small edge in its own backyard.
→ Pick Cox Communications If you wantYou want to bundle internet with a mobile phone plan
Xfinity Mobile is a legit money-saver when bundled with internet; Cox doesn't offer a comparable mobile option.
→ Pick Xfinity If you wantYou travel frequently and need Wi-Fi on the go
Xfinity's massive hotspot network means free Wi-Fi in millions of locations — Cox's hotspot coverage is far more limited.
→ Pick Xfinity Some links on this page are affiliate links. If you sign up through them, we may earn a commission at no extra cost to you.