The Comcast-owned company said it has set a new record for its fastest-ever broadband speedtest, which tests Internet speeds in the neighborhood of 10 Mbps.
The test is available to Comcast customers in a few states, including New York and California.
Comcast said it expects to test speeds of up to 15 Mbps in New York City and 20 Mbps in San Francisco.
The company said that test will start running Monday and continue through the end of March.
Comcast also announced that it will offer a new product that will enable customers to download and upload unlimited amounts of content at once, for free, without the need for any monthly charges.
The new service is called the Speedtest Cloud, which Comcast said will allow subscribers to upload, download, and stream video, music, and other content at speeds of 10Mbps or faster.
Comcast has long offered a free plan with unlimited data plans that also allow for streaming video, which the company said will become more popular.
Comcast is the largest U.S. cable company and the largest broadband provider by subscribers, with more than 100 million customers in its service territory.
Comcast, which is owned by Charter Communications Inc., said it is also adding a streaming video service to its service offering, called Xfinity X1, and a data plan called X1 Plus.
Comcast plans to offer X1 services on two separate platforms, X1 and X1 Unlimited, starting next year.
Comcast and Charter also have a joint venture that makes the Internet access service known as Comcast Fiber.
Comcast’s $45 billion purchase of Time Warner Cable earlier this year raised questions about the company’s commitment to a competitive broadband market.
Comcast declined to comment on whether it is planning to invest more in broadband infrastructure.