Cox vs Xfinity: Our Verdict
Cox and Xfinity are both major cable internet providers with similar underlying technology but notably different approaches to pricing, data policies, and plan structures. Xfinity, the nation's largest cable provider covering 39 states plus DC, offers plans from $55/mo for 300 Mbps up to $90/mo for 1.2 Gbps with a 1.2 TB data cap, while Cox serves 18 states with plans from $39.99/mo for 100 Mbps to $99.99/mo for 1 Gbps with a 1 TB data cap. Xfinity's 5-Year Price Guarantee option provides pricing stability that Cox cannot match, and Xfinity's slightly higher 1.2 TB data cap and faster top-tier speeds give it a slight overall advantage.
Our Pick
Xfinity
Recommendation
Xfinity edges out Cox for most customers thanks to its higher top-tier speeds (1.2 Gbps vs 1 Gbps), larger data cap (1.2 TB vs 1 TB), and the availability of a 5-Year Price Guarantee that provides long-term billing predictability. Cox may appeal to customers who find better introductory promotional pricing or who value Cox's specific TV and phone bundle configurations.
Side-by-Side Comparison
| Feature | Cox | Xfinity |
|---|---|---|
| Starting Price | $15.00/mo | $20.00/mo |
| Max Internet Speed | 2000 Mbps | 2000 Mbps |
| Available Plans | 10 plans | 18 plans |
| Internet | ||
| TV | ||
| Mobile | ||
| Home Security | ||
| View Cox Plans | View Xfinity Plans |
Featured Plans
Cox
Cox Gigablast
Contour TV Preferred
Cox Mobile Gig Unlimited
Xfinity
Xfinity Home Plus
Xfinity Fast
Xfinity Fast 1 Gbps
Frequently Asked Questions
How do Cox and Xfinity data caps compare?
Xfinity imposes a 1.2 TB monthly data cap on most of its residential plans, while Cox enforces a slightly smaller 1 TB monthly cap. Xfinity offers an unlimited data add-on for $30/mo or includes unlimited data in certain plan tiers, while Cox offers similar unlimited data upgrades at varying prices by market. For households that consistently approach or exceed 1 TB of monthly usage, the $30/mo Xfinity unlimited add-on is a straightforward solution.
What is Xfinity's 5-Year Price Guarantee and does Cox offer anything similar?
Xfinity's 5-Year Price Guarantee locks in your monthly internet rate for five years, protecting you from the price increases that typically follow the expiration of promotional periods. Cox does not offer a comparable long-term price guarantee, and its promotional rates typically expire after 12-24 months, at which point the monthly cost can increase by $20-$40 or more. This guarantee can save customers hundreds of dollars over the five-year term.
Which is faster, Cox Gigablast or Xfinity Gigabit?
Xfinity's standard gigabit plan offers download speeds up to 1.2 Gbps, compared to Cox Gigablast's maximum of approximately 1 Gbps, giving Xfinity a 20% speed advantage at the top tier. Both providers offer comparable upload speeds in the 35 Mbps range due to the limitations of cable technology. Xfinity also offers its Gigabit Pro fiber plan in limited areas with speeds up to 6 Gbps.
Can I get Xfinity Mobile but keep Cox internet, or vice versa?
Xfinity Mobile is available exclusively to Xfinity internet customers, so you cannot subscribe to Xfinity Mobile while using Cox for your home internet. Cox does not offer its own mobile phone service, so Cox internet customers who want a carrier-bundled mobile plan would need to maintain separate accounts with a wireless provider. If mobile bundling is important to you, Xfinity's ability to combine home internet and mobile service under one bill represents a clear advantage.
In which states can I get Cox vs Xfinity internet service?
Xfinity has substantially broader geographic coverage, serving customers in 39 states plus the District of Columbia. Cox operates in 18 states with concentrated presence in Arizona, Virginia, Louisiana, Oklahoma, Arkansas, and Connecticut. There is overlap in a number of states where both providers operate, though they typically serve different cities and neighborhoods within those states.