Comcast has pushed more than 500,000 "smart" amplifiers into the field as part of its DOCSIS 4.0 Full Duplex rollout, EVP and chief network officer Elad Nafshi told SCTE Cable-Tec Expo in Atlanta on Wednesday. The deployment anchors a broader push by US cable operators to weave AI into the access network and turn hubs, headends and customer-premises equipment into a platform for edge services and new revenue lines.

The smart amps sit inside Comcast's FDX footprint, where Nafshi reported a 59% jump in quality-of-service improvements and a 21% cut in outage times. They also feed a data pipeline Comcast is using to train agentic AI tools for network operations. Root-cause analysis agents are now more than 90% accurate, he said, with a target near 99% by next year's show. The operator already "deconflicts" more than half of its trouble tickets.

"You can get choked on data and not know what to do with it," Nafshi said during the general session. The answer, he argued, is not more data but better agents to triage it.

How is AI reshaping cable network operations?

Comcast's strategy treats the access network as a distributed compute fabric. Nafshi said the company runs more than 200 AI-powered edge compute centers across the United States, equipped with Nvidia chips and software containers from third parties. Comcast is exploring hosting a DNS service at the edge to limit exposure to future national outages, and expects the platform to host services that "don't exist today" within 12 to 18 months.

AI is also reaching the customer side of the network. Justin Colwell, EVP of technology strategy and innovation at Spectrum, said more than half of his company's broadband subscribers now use an AI agent of some kind. AI-related traffic on the Spectrum network climbed 350% year-on-year, he said, but still accounts for just 0.1% of downstream and 0.3% of upstream usage.

Those ratios will not stay small for long, Colwell warned. Adoption of AI-assisted cameras, robotics and self-driving vehicles will push upstream traffic sharply higher, reinforcing the case for symmetrical gigabit speeds over DOCSIS 4.0. "Physical AI is coming fast," he said, and a 100-millisecond round trip to the cloud cannot serve it.

What edge business models are emerging?

Spectrum, fresh from closing its merger with Cox Communications, used the show floor to position itself as a neo-cloud provider. The operator said its more than 1,000 edge sites can reach roughly 500 million connected devices in US homes and businesses with latency inside 10 milliseconds. Cast AI is using that footprint for a GPU-as-a-service product. Hydra is brokering GPU capacity on the same infrastructure, while HP is extending its LAN to access compute for graphic-arts workstations.

Charter's SVP of emerging technology and innovation, Gary Koerper, said partners are beginning to generate revenue from those arrangements. The freed-up space, power and cooling has "become a strategic advantage," Colwell added.

Comcast, for its part, has signed Fastly to run as a software container on its edge platform. The CDN offloads peak traffic for live sports streams on Peacock, NBCUniversal's premium service, and is being extended to on-demand media. Oracle has also signed on. "Live video is really the perfect use case" for edge compute, said Jon Dakss, VP of interactive media platform services at Oracle.

How will cable's AI story evolve?

Nafshi said Comcast will keep pre-positioning high-bandwidth content, from game downloads to software patches, and will layer in cybersecurity services at the edge. Google Cloud, which has long cached YouTube traffic inside cable networks, expects its role to expand as operators add more compute at the access layer. "With the advent of AI, generative AI... that relationship has evolved drastically in the last couple of years," said Matt Anderson, Google's global market lead for telecom.

CableLabs president and CTO Mark Bridges framed the shift as a fundamental change in how the network is monetized, with virtualization freeing the space, power and cooling needed to host third-party workloads. The headline figure remains the 500,000 smart amps now in service, but the bigger commercial question is how quickly partner revenue from edge compute can lift broadband ARPU as DOCSIS 4.0 build-outs extend into 2026 and beyond.