Tesla Auto-Labeling Cluster is a large GPU cluster operated by Tesla, located in the United States, in the private sector. It came online around August 2021. At that moment it ranked number 18 among known clusters.
It is built on 1,752 NVIDIA A100. That amounts to about 552 H100e of AI compute. The cluster draws roughly 1.51 MW. Its hardware is estimated at $60M.
Epoch AI rates the certainty of this record as likely. I'm assuming these are A100s because H100s weren't out yet at the time and that is what the other cluster mentioned has