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AWS Activates $11 Billion Indiana AI Megacluster, Putting Nearly 500,000 Trainium2 Chips to Work for Anthropic

The project signals Amazon’s bid to control its AI hardware stack, lessening dependence on Nvidia.

Overview

  • AWS says Project Rainier is fully operational less than a year after its announcement, with Anthropic training and serving Claude models at the site.
  • The cluster currently runs nearly half a million Trainium2 chips, with AWS stating Anthropic will scale to more than 1 million by the end of the year.
  • The Indiana campus is slated to grow to about 30 large data center buildings on a 1,200‑acre site converted from farmland.
  • Local reports point to power needs exceeding 2 gigawatts as utilities forecast a doubling of peak demand once the full campus is online.
  • AWS reported 20% Q3 revenue growth as executives touted recent capex near $100 billion and Amazon confirmed roughly 14,000 corporate layoffs tied to AI-focused reallocation.