Amazon built a massive AI supercluster for Anthropic called Project Rainier – here's what we know so far

deep dive Amazon Web Services (AWS) is in the process of building out a massive supercomputing cluster containing "hundreds of thousands" of accelerators that promises to give its model building buddies at Anthropic a leg up in the AI arms race.

The system, dubbed Project Rainier, is set to come online later this year with compute spanning multiple sites across the US. Gadi Hutt, the director of product and customer engineering at Amazon's Annapurna Labs, tells El Reg that one site in Indiana will span thirty datacenters at 200,000 square feet apiece. This facility alone was recently reported to consume upwards of 2.2 gigawatts of power.

But unlike OpenAI's Stargate, xAI's Collusus, or AWS's own Project Ceiba, this system isn't using GPUs. Instead, Project Rainier will represent the largest deployment of Amazon's Annapurna AI silicon ever.

"This is the first time we ...