Japan’s NICT hits 1.02 petabit internet speed—350,000x faster than U.S. average
Japan’s National Institute of Information and Communications Technology (NICT) has taken a major leap forward in fiber optic technology by achieving a mind-boggling data transmission speed of 1.02 petabits per second over a distance of 1,802 kilometers. That’s roughly 127,500 gigabytes per second—more than 350,000 times faster than the average fixed broadband connection in the United States, which as of May 2025 was around 289 Mbps, according to Speedtest. It’s the kind of speed that could download the entire Netflix catalog in less than a second.
The secret to this achievement lies in a new type of fiber optic cable developed by the NICT team. Instead of the single-core design used in most current networks, the cable packs 19 separate cores within the same 0.125-millimeter diameter, which is standard for fiber networks. These multiple cores allow for dramatically increased data throughput, while the uniform structure helps reduce signal degradation and loss. In tests, the team had to amplify the signal 21 times to maintain stability across the entire 1,120-mile stretch—roughly the distance between New York and Chicago.
This new record doesn’t just edge out previous milestones—it blows them away. Last year, the same research group managed half the speed but only across one-third of the distance. Now, improved signal boosting and better error resistance have enabled both a higher rate and a significantly longer transmission range.
What makes this development especially noteworthy is that these new high-capacity cables can still work within the constraints of today’s fiber infrastructure. That means we could eventually see this kind of tech deployed without needing to dig up roads or install entirely new network systems—great news for regions where fiber rollout has slowed or stalled. With global internet usage and data demands growing roughly 50% per year, according to Nielsen’s Law, scalable innovations like this are going to be essential in the years ahead.
The record hasn’t been independently confirmed yet, but NICT’s success paints a promising future where blazing-fast internet could become a reality—not just in research labs, but eventually in homes and businesses worldwide.