AWS Weekly Roundup: GPT-6.1 Terra on Bedrock, Step Functions as agent tools, and more (November 2, 2026)

This article summarizes AWS announcements from the week of November 2, 2026, highlighting new AI agent capabilities and cost-effective model options.

• OpenAI GPT-6.1 Terra now available on Amazon Bedrock with 50% lower token costs than competing models
• AWS Step Functions workflows callable as AI agent tools through Bedrock AgentCore Gateway using Model Context Protocol
• AWS KMS adds ML-KEM post-quantum key encapsulation support across NIST FIPS 203 parameter sets
• IAM Identity Center enables cross-Region trusted identity propagation for multi-Region architectures
• Amazon ECS supports GPU sharing with NVIDIA Multi-Process Service for efficient resource utilization
• AWS Lambda enables Seekable OCI lazy loading reducing container startup time by up to 70%
• Amazon EKS Auto Mode adds Kubernetes Gateway API support with automatic load balancing infrastructure

The week emphasized expanding agent reach through existing services and reducing operational costs through efficient resource management and post-quantum security preparation.