Anthropic Claude Fable 5 on AWS: Mythos-class capabilities with built-in safeguards now available

Anthropic Claude Fable 5 on AWS: Mythos-class capabilities with built-in safeguards now available by Channy Yun (윤석찬) on 09 JUN 2026 in Amazon Bedrock , Amazon Machine Learning , Artificial Intelligence , Launch , News Permalink Comments Share Updated on June, 12, 2026 – Claude Fable 5 and Claude Mythos 5 on Amazon Bedrock access unavailable To support compliance with the US Government export control directive, Anthropic has asked AWS to revoke access to Claude Fable 5 and Claude Mythos 5 for all users. All other models, including Opus4.8, are not affected and you can continue using them in full confidence. Please view the Anthropic statement for further details. Today, we’re announcing the availability of Claude Fable 5 on Amazon Bedrock and Claude Platform on AWS . Claude Fable 5 makes Mythos-level capabilities available to customers, with strong safeguards designed to make it safe for broader use. Fable 5 is state-of-the-art on nearly all tested benchmarks and delivers exceptional performance in software engineering, knowledge work tasks, and vision – built for ambitious, long running work. With Claude Fable 5 on Bedrock, you can build within your existing AWS environment and scale inference workloads. You can also use Claude Fable 5 through the Claude Platform on AWS, giving you Anthropic’s native platform experience. According to Anthropic, Claude Fable 5 represents a step-change in what you can accomplish with AI models. Here is what makes this model different: Long-running, asynchronous execution — Claude Fable 5 handles complex tasks that previous models could not sustain, executing coding and knowledge work tasks for extended periods without intervention. Advanced vision capabilities — Claude Fable 5 understands diagrams, charts, and tables nested in files and PDFs. This opens up research and document-heavy work in finance, legal, analytics, architecture, and gaming. In coding, the model implements designs with high fidelity and uses vision to critique its