Amazon Web Services, which has been building its own AI training chips for years now, just introduced a new version known as Trainium3 that comes with some impressive specs. The cloud provider, which made the announcement Tuesday at AWS re:Invent 2025, also teased the next product on its AI training product roadmap: Trainium4, which is already in the works and will be able to work with Nvidia’s chips. AWS used its annual tech conference to formally launch Trainium3 UltraServer, a system powered ...