Amazon Bedrock now offers Claude Mythos Preview (Gated Research Preview)

Amazon Bedrock, the platform for building generative AI applications and agents at production scale, now offers Claude Mythos Preview in gated research preview as part of Project Glasswing. Claude Mythos Preview is Anthropic's most advanced AI model to date, representing a fundamentally new model class with state-of-the-art capabilities across cybersecurity, software coding, and complex reasoning tasks. The model can identify sophisticated security vulnerabilities in software and demonstrate exploitability, comprehending large codebases and delivering actionable findings with less manual guidance than previous AI models. This enables security teams to accelerate defensive cybersecurity work, find and fix security vulnerabilities in the world's most critical software, and address these issues before threats emerge.

Claude Mythos Preview signals an upcoming wave of AI models with powerful cybersecurity capabilities. Anthropic and AWS are taking a deliberately cautious approach to release, prioritizing internet-critical companies and open-source maintainers whose software and digital services impact hundreds of millions of users. This approach gives defenders the opportunity to strengthen their codebases and share what they learn so the whole industry can benefit.

Claude Mythos Preview is available in gated preview in the US East (N. Virginia) Region through Amazon Bedrock. Access is limited to an initial allow-list of organizations. If your organization has been allow-listed, your AWS account team will reach out directly. For AWS CISO Amy Herzog's perspective on this launch and what it means for the future of cybersecurity, read Building AI Defenses at Scale: Before the Threats Emerge.