NVIDIA Tethys is a large GPU cluster operated by NVIDIA, located in the United States, in the private sector. It came online around November 2021. At that moment it ranked number 121 among known clusters.
It is built on 160 NVIDIA A100. That amounts to about 50.45 H100e of AI compute. The cluster draws roughly 0.13 MW. Its hardware is estimated at $5M.
Epoch AI rates the certainty of this record as confirmed.