Quantum Fiber Review 2026: Is It Right for You? Compare Plans, Prices, and Speeds
Our experts have spent months researching what all the fuss with Quantum internet is about.
Update: Quantum Fiber has been acquired by AT&T. We’re still waiting to see how this affects internet customers, but check out our AT&T Fiber internet review to learn more about Quantum’s new corporate parent.
Compare Quantum Fiber to the competition
Prices starting at
$45.00/mo.
Max download speeds up to*
8,000 Mbps
Service Type
Fiber
* Prices are plus tax.
Prices starting at
$40.00/mo.
Max download speeds up to
2000 Mbps
Service Type
Cable
Pricing, speed and availability not guaranteed. Subject to change.
Quantum Fiber fares well against major competitors
| Provider | Price | Max download speeds | Flat-rate pricing | Data cap | Details |
|---|---|---|---|---|---|
| AT&T | $50.00–$125.00/mo. | 300–5,000 Mbps | Yes | Unlimited |
|
| Cox | $55.00–$115.00/mo.* | 300–2,000 Mbps | No | 1.2 TB | Check Availability |
| Quantum Fiber | $45.00–$165.00/mo.† | 500–8,000 Mbps | Yes | Unlimited |
|
| Spectrum | $40.00–$70.00/mo.* | Up to 500–2,000 Mbps | No | Unlimited |
|
| Xfinity | $40.00–$100.00/mo. | 300–2,000 Mbps | No | Unlimited | Check Availability |
Data effective as of publish date. Offers and availability may vary by location and are subject to change. See full disclaimer for details.
One of Quantum’s biggest advantages over the competition is its pricing. With prices that start at just $45.00 per month plus tax, Quantum fiber internet plans are a far better deal than comparable plans from cable ISPs like Cox, Xfinity, or Spectrum. Each ISP has second-year price increases that make them far pricier than Quantum.
As Quantum’s closest national fiber competitor, AT&T is slightly pricier than Quantum overall. But AT&T also offers bundle savings if you add mobile phone service to your plan.
Looking for a low-cost internet plan? If Quantum Fiber’s prices are still too high for you, we recommend their Simply Fiber Internet Plan™. Qualifying households can get equal 200 Mbps upload and download speeds for just $30.00 per month. Visit Quantum Fiber’s website for more details and eligibility information.
Quantum Fiber plans offer simple prices, fast performance
| Plan | Price† | Max download speed | Max upload speed | Details |
|---|---|---|---|---|
| 500 Mbps | $50.00/mo. plus tax | 500 Mbps | 500 Mbps | View plan |
| 1 Gig | $45.00/mo. plus tax | 940 Mbps | 940 Mbps | View plan |
| 2 Gig | $70.00/mo. plus tax | 2 Gbps | 2 Gbps | View plan |
| 3 Gig | $70.00/mo. plus tax | 3 Gbps | 3 Gbps | View plan |
| 8 Gig | $165.00/mo. plus tax | 8 Gbps | 8 Gbps | View plan |
Data effective as of publish date. Offers and availability may vary by location and are subject to change.
†See full disclaimer for details.
Quantum’s 500 Mbps plan is a great starter speed for most households, and you’ll have enough bandwidth for family Netflix nights or work assignments. With 500 Mbps upload speeds, sputtering Zoom calls and lengthy Google Drive transfer times will be a problem of the past. And starting at only $50 per month plus tax, Quantum’s 500 Mbps plan is more budget-friendly than most fiber providers.
Now, Quantum’s 1 Gig plan costs a bit less than its 500 Mbps plan (!), and you’ll get much faster download and upload speeds. This plan works best if your household has heavy internet users who regularly download large games or upload files for work.
Quantum’s plans also come with unlimited data and no-contract pricing. No-contract service means you can cancel your internet plan at any time without extra fees. We’re huge fans of Quantum’s flat-rate pricing approach, which has become increasingly popular among fiber internet providers.
Pro tip: As of April 2026, Quantum Fiber has ended Price For Life for new customers. Current customers who have already claimed the deal will not be affected. If you’re interested in what other providers offer multi-year (or perpetual!) price guarantees, check out our internet price lock guide.
Quantum Fiber has hit a few performance bumps
| Test | Score |
|---|---|
| Internet reliability approval rating | 58% approval |
| Internet speed approval rating | 68% approval |
Historically a top contender for speed and reliability, Quantum Fiber has faced growing pains as its network footprint has expanded. In our 2026 Internet Customer Satisfaction Survey, Quantum’s reliability approval rating dipped to 58%, while its internet speed approval rating sat at 68%.
These lower marks are likely due to growing pains as its parent company, Lumen, continues migrating older CenturyLink DSL customers to the newer Quantum Fiber network infrastructure. While Quantum’s fiber plans are still inherently faster and more stable than traditional cable, real-world users have reported more consistency issues than in previous years as the provider handles its expanding user base.
Quantum Fiber features
Quantum’s internet plans are great, but the ISP’s other areas require a little more explanation. Here’s everything else you need to know about Quantum.
Quantum Fiber availability
Understanding Quantum Fiber’s availability requires a quick bit of background. Quantum Fiber is a CenturyLink sister company that offers fiber internet services. CenturyLink still offers fiber internet service, but at the moment, parent company Lumen is working to fully separate its internet services between Quantum (for fiber internet) and CenturyLink (for DSL internet).
Currently, Quantum Fiber is available in the following states:
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Quantum’s already completed this migration in many states. During our research, we checked old CenturyLink addresses in Colorado and Washington and got redirected to Quantum Fiber’s purchase prompt.
In practice, nothing separates Quantum and CenturyLink’s fiber plans. Both companies have the same internet plans, and CenturyLink has been migrating its fiber internet customers over to Quantum. That said, you’re not alone if you’re confused about the difference between CenturyLink and Quantum, but Lumen will eventually make this distinction moot.
Quantum Fiber equipment fees
If your address already has a Quantum Fiber hookup, you won’t have to pay an installation fee. But Quantum could be pricier if the ISP needs to do a new installation.
Quantum will cover up to $1,500 in installation costs, and the ISP says most jobs should cost less than $2,000. In these scenarios, you’ll get a full installation quote from Quantum before you choose to sign up for service.
For standard installations, you can rent a combo modem/wireless router for $15 per month on Quantum’s 500 Mbps plan. If you upgrade to the 1 Gig plan, you can get it for free (it normally costs $200) or choose to use your equipment. We suggest buying your own wireless router instead of renting one since you’ll save on monthly rental fees.
What do real Quantum Fiber customers think about Quantum internet?
As part of CableTV.com’s annual Internet Customer Satisfaction Survey, we talked to thousands of real-life internet customers to see how they felt about their internet providers. While Quantum Fiber has historically topped our charts, this year’s expansion-related network shifts have caused a noticeable drop in consumer sentiment:
- 65% of Quantum Fiber customers felt that Quantum fully met their expectations as an internet provider.
- 58% of Quantum customers felt that Quantum’s prices were a good value compared to its internet quality.
- 68% of customers would recommend Quantum to someone else.
Quantum Fiber was really easy to set up. They have been great to work with. Our internet went down and their customer service was amazing and helped us fix it right away. Ever since, we haven't had any problems.
Quantum Fiber FAQ
Is Quantum Fiber the same as CenturyLink?
Quantum Fiber and CenturyLink are separate brands owned by Lumen. In the future, CenturyLink will offer only DSL services, and Quantum will offer fiber internet plans.
Does Quantum Fiber have unlimited data?
Quantum Fiber has unlimited data on all of its fiber internet plans.
What are the pros and cons of Quantum Fiber?
Quantum Fiber's pricing is excellent and it offers fast internet plans. However, you'll need to find another provider for TV service, and Quantum offers little in the way of big deals.
What is Quantum Fiber?
Quantum Fiber is a fiber internet provider that offers residential and commercial internet plans throughout the US.
How much does Quantum Fiber actually cost?
Quantum Fiber internet plans start at $45 per month plus tax.
Is Quantum Fiber CenturyLink?
Quantum Fiber offers the same fiber internet services as CenturyLink. The company that owns Quantum Fiber is Lumen, which also owns CenturyLink.
Is Quantum Fiber good?
Quantum Fiber is a good internet provider thanks to its affordable prices and fast internet speeds.
Why you should trust us
To evaluate Quantum Fiber internet, we spent months analyzing its availability, pricing, internet plans, and reputation using resources like our annual internet customer satisfaction survey.
We also compared Quantum to cable providers, including Xfinity, AT&T, and Spectrum, to see how the ISP stacked up versus the competition.
For more information on our methodology, check out our How We Rank page.
†500 Mbps: New customers only. Limited availability. Service, speed, and rate in select locations only. Bank account payment required. Taxes and fees apply. Limited availability. Service and rate in select locations only. Offer subj to change. To receive advertised monthly rate, customer must pay by bank account (via ACH payment). If customer changes bank account to a different payment method or Quantum Fiber requires a change to payment method after two failed bank account draws within a twelve-month period, the then-current standard monthly rate will apply.
1 Gig: Price after combined discounts of $35/mo when enrolled in Autopay w/ bank account. Paperless bill required. New customers only. Taxes &; fees extra.
2 Gig: Price after combined discounts of $30/mo when enrolled in Autopay w/ bank account. Paperless bill required. New customers only. Taxes & fees extra.
3 Gig: Price after combined discounts of $35/mo when enrolled in Autopay w/ bank account. Paperless bill required. New customers only. Taxes & fees extra.
8 Gig: New customers only. Limited availability. Service, speed, and rate in select locations only. Bank account payment required. Taxes and fees apply. Limited availability. Service and rate in select locations only. Offer subj to change. To receive advertised monthly rate, customer must pay by bank account (via ACH payment). If customer changes bank account to a different payment method or Quantum Fiber requires a change to payment method after two failed bank account draws within a twelve-month period, the then-current standard monthly rate will apply.
*Cox, Spectrum:For first 12 months.
