Cox internet plans
Cox sells four residential internet tiers, ranging from 300 Mbps up to 2 Gbps. All plans run on hybrid fiber-coaxial (HFC) cable using DOCSIS 3.1, though Cox has been quietly rolling out fiber-to-the-home in parts of Phoenix, Las Vegas, and Chesapeake. If you live in one of those fiber areas, you get symmetrical upload and download speeds. On cable, upload speeds are much lower, typically 10 to 100 Mbps depending on the plan.
Every plan comes with a 24-month price lock at the promo rate. After that, standard pricing kicks in and you will see your bill jump by $20 to $40 per month depending on the tier. Cox does not require contracts on most plans, so you can leave after the price lock ends without an early termination fee. The exception is some promotional offers that bundle a Cox Mobile line, which may carry a prorated ETF of up to $120.
Understanding cost per Mbps
The US$/Mbps column shows how much you pay for each megabit of download speed. Lower is better. The Fast plan at $55 per month gives you 300 Mbps, which works out to $0.18 per Mbps. The Go Beyond Fast at $115 per month costs just $0.06 per Mbps. That is a threefold difference in raw value between the cheapest and most expensive tiers.
This metric is useful for comparing plans on equal footing, but it does not tell the whole story. A household that only needs 100 Mbps does not benefit from paying less per megabit at a higher tier. The right plan depends on what you actually use, not which one has the best ratio on paper.
Cox's pricing makes this comparison straightforward. The jump from 300 Mbps at $55 to 500 Mbps at $85 is a $30 increase for 200 extra Mbps. Going from 500 Mbps to 1 Gbps costs another $15 for 500 additional Mbps, which is where the value really improves. The 2 Gbps tier at $115 is the best per-megabit value in the lineup, but most households will never need that much speed.
Fast, $55 per month
The entry-level Cox plan delivers 300 Mbps download and 10 Mbps upload on cable. At $55 per month with a 24-month price lock, it is one of the cheaper gigabit-class cable plans available from a major ISP. The 10 Mbps upload is the weak point. Video calls and file uploads will work, but multiple people trying to upload at once will notice the constraint.
This plan suits a household of two to three people who stream in HD or 4K on a couple of devices, browse the web, and use social media. Online gaming works fine. The 300 Mbps download is more than enough for most daily tasks. What you are really paying for here is the Cox ecosystem: the Panoramic Wi-Fi gateway, access to millions of Cox hotspots, and the option to bundle with Cox Mobile later.
The data cap is 1.25 TB per month. For context, streaming 4K video uses roughly 7 GB per hour. A household watching 10 hours of 4K per week would use about 280 GB per month, leaving plenty of headroom. The cap only becomes a real concern if you have multiple people downloading large games, backing up large folders to the cloud, or running a home business with heavy data use.
Go Even Faster, $85 per month
The middle tier jumps to 500 Mbps down and 35 Mbps up for $85 per month. The upload improvement from 10 to 35 Mbps is significant for anyone working from home. Video conferencing, cloud backups, and sending large files all become much smoother at 35 Mbps compared to 10.
For a four-person household where two people might be on video calls while someone else streams and another downloads files, 500 Mbps gives you enough headroom that you will not think about your internet speed. The 24-month price lock means your bill stays at $85 for two years, then rises to around $94 per month at standard rates.
This is also where the Cox Mobile bundle becomes interesting. If you add a Cox Mobile Gig Unlimited line ($45 per month), you get a $15 discount on your internet, bringing the combined cost to $115 per month for 500 Mbps internet plus unlimited mobile. You also get free unlimited home data (a $50 per month value) and a 3-year price lock that extends beyond the standard 24 months.
Go Super Fast, $100 per month
The gigabit plan delivers 1,000 Mbps down and 35 Mbps up on cable, or 940 Mbps symmetrical in fiber areas. At $100 per month, it costs $15 more than the 500 Mbps tier for double the download speed. The upload stays at 35 Mbps on cable, which is the main limitation if you need fast uploads.
In Cox's fiber markets (parts of Phoenix, Las Vegas, Chesapeake), this plan delivers 940 Mbps in both directions. Symmetrical uploads matter for video editors, remote workers uploading large files, and anyone running a home server. If your address qualifies for Cox fiber, this plan becomes significantly more valuable than the cable version.
The 24-month price lock at $100 is competitive with similar gigabit plans from Spectrum ($60 introductory) and Xfinity ($70 with 5-year lock). The post-promo price of around $124 per month is where Cox gets expensive, so the price lock matters. Bundling with Cox Mobile Gig Unlimited extends this to a 5-year lock at $85 per month for internet after the $15 discount.
Go Beyond Fast, $115 per month
The top tier offers 2,000 Mbps down and 100 Mbps up on cable, or 2 Gbps symmetrical in fiber areas. At $115 per month, it costs only $15 more than the gigabit plan for an extra 1,000 Mbps of download speed. The 100 Mbps upload on cable is a meaningful jump from the 35 Mbps on lower tiers.
This plan makes sense for households with very heavy data use. If you have multiple people streaming 4K content, downloading large game files regularly, backing up multiple devices to cloud storage, and running a home office, the extra headroom prevents bottlenecks. For most households, though, the gigabit plan delivers more than enough speed at a lower cost.
The 5-year price lock with Cox Mobile Gig Unlimited is the longest guarantee Cox offers. At $100 per month for internet after the $15 bundle discount, your rate is locked until 2031. That is unusual in the cable industry, where post-promo price hikes are the norm. Whether that matters depends on how long you plan to stay at your current address.
Data caps and overage charges
Every Cox plan comes with a 1.25 TB monthly data cap. That is 1,280 GB, or roughly the equivalent of streaming 4K video for about 180 hours. For most households, this is enough. The average US household uses around 500 to 600 GB per month according to recent industry reports, so a family of four would need to be fairly heavy users to approach the limit.
When you exceed the cap, Cox charges $10 per 50 GB block, up to a maximum of $100 per month. You get one courtesy overage pass on your first offense, so your first month of going over does not incur charges. After that, the fees add up quickly. A household that consistently uses 2 TB per month would pay $100 in overage fees on top of the base plan cost.
Cox offers a few ways to avoid overages. The unlimited data add-on costs $49.99 per month, which is steep. A cheaper option is the 500 GB add-on at $29.99 per month, giving you 1.75 TB total. The best deal, though, is bundling with Cox Mobile Gig Unlimited on the 500 Mbps plan or higher. That gives you free unlimited home data, saving you the $49.99 add-on cost entirely.
Cox Mobile bundle discounts
Cox Mobile runs on Verizon's 4G and 5G network and requires an active Cox internet plan. There are two mobile plans: Pay as You Gig at $15 per line per month (1 GB of data, then $15 per GB) and Gig Unlimited at $45 per line per month (20 GB of premium data, then throttled to 1.5 Mbps).
The real value is in the bundle perks. Adding Cox Mobile Gig Unlimited to your internet plan triggers several benefits: a $15 monthly discount on your internet bill, free unlimited home data on 500 Mbps and higher plans, and an extended price lock. The duration of that lock depends on your internet tier: 3 years for Go Even Faster, 5 years for Go Super Fast and Go Beyond Fast.
Multi-line discounts bring the per-line cost down further. Two lines cost $40 each, three lines cost $35 each, and four to five lines cost $30 each. For a family of four, that is $120 per month for unlimited mobile across four lines, plus the internet discount and free home data. The math works out reasonably well if you need both home internet and mobile service.
Prepaid and low-income options
Cox offers three plans for people who need flexibility or cannot pass a credit check. StraightUp Internet costs $50 per month for 100 Mbps with no contract, no credit check, and no deposit. It includes a free modem and self-installation. The data cap is the same 1.25 TB as the regular plans, and the price is locked for 3 years.
ConnectAssist is a $30 per month plan for adults on government assistance programs (SNAP, Medicaid, SSI, WIC, Pell Grant, Veterans Pension, or income at or below 200% of the federal poverty level). It delivers 100 Mbps with the same terms as StraightUp: no contract, no credit check, free modem. The FCC Lifeline discount of $9.25 per month can be stacked on top, reducing the cost to about $20.75 per month.
Connect2Compete is the lowest-priced option at $9.95 per month for K-12 students in households that qualify for SNAP, NSLP, TANF, Medicaid, or similar programs. Same 100 Mbps speed, same no-contract terms. With Lifeline, the cost drops to roughly $0.70 per month. The ACP (Affordable Connectivity Program) that previously subsidized broadband for low-income households ended in June 2024 and has not been restored as of August 2026.
Equipment and installation
Cox includes the Panoramic Wi-Fi Gateway (a modem and router combo) free for 24 months on most plans. After the promotional period, the rental fee is $15 per month. You can avoid this by using your own modem. Cox requires a DOCSIS 3.0 or newer modem for plans up to 500 Mbps, and DOCSIS 3.1 for the 1 Gbps and 2 Gbps tiers. Your modem also needs a 2.5 Gbps Ethernet port to deliver full gigabit speeds.
Self-installation is free through Cox's Easy Connect process. Professional installation costs $100, though this is sometimes waived during promotions. If you need Wi-Fi Pods (mesh extenders) for better coverage, a one-pack costs $129.99 and additional pods are $99.99 each. Assisted installation for Wi-Fi Pods runs $30.
Every plan includes Cox Security Suite Plus (powered by McAfee) and access to roughly 4 million Cox Wi-Fi hotspots across the country. The 30-day money-back guarantee lets you cancel within the first month for a full refund if the service does not meet your expectations.
How Cox compares
Cox occupies an odd position in the US broadband market. It is the third-largest cable ISP behind Xfinity and Spectrum, but its pricing sits above both. The $55 entry point for 300 Mbps is comparable to Spectrum's $30 for 100 Mbps or Xfinity's $45 for 300 Mbps with a 5-year price lock. Cox's advantage is the 24-month price lock, which is longer than Spectrum's 12-month introductory period, though shorter than Xfinity's 5-year guarantee.
The data cap is Cox's biggest weakness. Xfinity has dropped data caps entirely on its current plans, and Spectrum never had them. T-Mobile and Verizon 5G Home Internet include unlimited data at lower price points. If data usage is a concern, Cox's 1.25 TB cap and $10-per-50 GB overage fees are worth factoring into the total cost.
The Cox Mobile bundle changes the equation somewhat. Free unlimited data and extended price locks make the combined internet-plus-mobile package more competitive than internet alone. Whether that matters depends on whether you need mobile service from Cox specifically, or if you already have a mobile plan you are happy with.
Cox is also merging with Charter/Spectrum in 2026. The combined company will rebrand as Cox Communications, with Spectrum branding appearing in legacy Cox markets around September 2026. How this affects pricing, plans, and the data cap policy is unclear at this point. If you are considering Cox, it may be worth waiting a few months to see how the merger reshapes the product lineup.
Page updated 24 August 2026. The table below shows live pricing and plan details from Cox. Click any row for the full breakdown including fees, perks and contract terms.