AWS’ Peter DeSantis says next Trainium chip will be ‘very differentiated’

AWS is not playing catch-up in the AI chip race. It is trying to lap the field. Peter DeSantis, the AWS senior vice president overseeing AI models, custom silicon, and quantum projects, said the next Trainium chip will be highly differentiated. The comment lands at a moment when the company’s existing Trainium3 accelerator is already sold out, and early reservations for its successor are piling up fast. For context: AWS has deployed more than one million Trainium chips. What Trainium3 and Trainium4 actually mean on paper Trainium3 became generally available on December 2, 2025. Compared to its predecessor, Trainium2, it delivers up to 4.4 times higher compute performance and roughly four times greater memory bandwidth, alongside improved energy efficiency. Trainium4, currently in development, is targeting even more ambitious numbers. AWS projects it will deliver six times the FP4 compute performance of Trainium3, with memory bandwidth again quadrupling. Broad availability is expected around 2027. FP4 refers to a lower-precision floating-point format increasingly used in large-scale AI model training. Higher throughput at FP4 means faster training runs at lower cost, which is exactl...