AWS expands Nova 2 AI models, Trainium3 UltraServers and 'frontier agents' at re:Invent 2025

Amazon Web Services used its re:Invent 2025 conference to unveil a Nova 2 family of foundation models (Lite, Pro, Sonic and Omni), new Trainium3 UltraServers built on a 3 nm AI chip, and a class of long‑running 'frontier agents' that act as virtual developers, security engineers and DevOps staff. The company also broadened Amazon Bedrock with 18 additional open‑weight models from partners such as Mistral AI, Google, MiniMax, NVIDIA and OpenAI, and introduced AI governance tools like Bedrock AgentCore Policy, Evaluations and Memory plus on‑prem 'AWS AI Factories' that bundle NVIDIA GPUs, Trainium and Bedrock/SageMaker for sovereign, high‑performance AI infrastructure.