AWS Trainium2 is Amazon's next-generation custom AI training chip, delivering 4x the compute performance of the first-generation Trainium. Designed for training the largest foundation models, Trainium2 powers EC2 Trn2 instances and UltraClusters connecting tens of thousands of chips via high-bandwidth interconnect. It is the chip behind Amazon's own foundation models and is optimized for use with the AWS Neuron SDK.