AWS Trainium2 ☆

Trainium2 is AWS's frontier-scale training part: 96 GB of HBM3 per chip, 1.3 dense FP8 PFLOPS, and 64-chip 'UltraServers' wired with NeuronLink. Its defining deployment is Project Rainier — the multi-site cluster AWS built with and for Anthropic, described at launch as approaching 500,000 chips and reported to be expanding toward a million by end of 2025. It is the largest non-NVIDIA AI build-out publicly known.