As organizations race to integrate AI into their workflows, the need for cost visibility, security, and operational efficiency has never been greater. This week’s AWS announcements directly address these challenges with powerful new tools. From granular cost tracking for AI models to a cutting-edge cybersecurity preview, a centralized agent registry, and a new way to treat S3 buckets as file systems, here are the five updates that will shape your cloud strategy. Dive into each below:
1. Cost Allocation for AI Workloads: Track Every Inference Dollar
AWS now supports cost allocation by IAM user and role in Amazon Bedrock. This feature allows you to tag IAM principals with attributes like team or cost center, then activate those tags in your Billing and Cost Management console. The resulting cost data flows into AWS Cost Explorer and the detailed Cost and Usage Report, giving you a clear line of sight into model inference spending. Whether you’re scaling agents across teams, tracking foundation model use by department, or running tools like Claude Code on Amazon Bedrock, this feature is a game changer for managing AI investments. You can get all the details in the IAM principal cost allocation documentation.
2. Claude Mythos Preview: A Cybersecurity Powerhouse on Bedrock
Anthropic's most sophisticated AI model to date, Claude Mythos, is now available as a gated research preview on Amazon Bedrock through Project Glasswing. This new model class focuses on cybersecurity, capable of identifying sophisticated security vulnerabilities in software, analyzing large codebases, and delivering state-of-the-art performance across cybersecurity, coding, and complex reasoning tasks. Security teams can use it to discover and address vulnerabilities in critical software before threats emerge. Access is currently limited to allowlisted organizations, with Anthropic and AWS prioritizing internet-critical companies and open-source maintainers. It’s a powerful addition for any team serious about proactive defense.
3. AWS Agent Registry: Centralized Agent Discovery and Governance
Managing AI agents across an organization just got easier. AWS Agent Registry, now in preview through Amazon Bedrock AgentCore, provides a private catalog for discovering and managing AI agents, tools, skills, MCP servers, and custom resources. Instead of duplicating existing capabilities, teams can search using semantic or keyword queries, enforce approval workflows, and maintain full audit trails via AWS CloudTrail. The registry is accessible through the AgentCore Console, AWS CLI, SDK, and even as an MCP server queryable from IDEs. This centralization reduces redundancy and ensures governance is baked right in.
4. Amazon S3 Files: S3 Buckets as Shared File Systems
Amazon S3 Files transforms S3 buckets into shared file systems that connect any AWS compute resource directly with your S3 data. Built on Amazon EFS technology, it delivers full file system semantics with low-latency performance, caching actively used data and providing multiple terabytes per second of aggregate throughput. This means applications that rely on traditional file system interfaces can now leverage the durability and scalability of S3 without code changes. It’s ideal for data lakes, machine learning pipelines, and any workload that needs POSIX-like access to cloud storage.
5. Project Glasswing: A Research Preview for Advanced AI Security
Beyond Claude Mythos, Project Glasswing represents a broader initiative to bring advanced AI models to security-conscious organizations. This research preview allows select enterprises to explore new model capabilities before they become generally available. For teams responsible for critical infrastructure or open-source projects, this is an opportunity to shape the future of AI-driven cybersecurity. The preview emphasizes responsible deployment, with strict access controls and collaborative feedback loops between Anthropic, AWS, and participants. It’s a call to action for security leaders to get involved early.
From cost transparency to agent governance, file systems to cutting-edge security models, this week’s AWS updates empower you to scale AI responsibly and efficiently. Start exploring these tools today to stay ahead in the rapidly evolving cloud landscape.