AWS adds Anthropic's Claude Fable 5.2 and Mythos 5.2 to Bedrock

AWS announced that Anthropic's Claude Fable 5.2 and Claude Mythos 5.2 are available on Amazon Bedrock and Claude Platform on AWS. Fable 5.2 is the generally available model, aimed at agentic coding across large multi-repository codebases, long-running agents coordinating subagents over days, scientific research, quantitative finance and code-based design work. Mythos 5.2 is offered only through Anthropic's verification programs, for work in cyber security and life sciences. Anthropic designates Fable 5.2 a Covered Model, so use by default requires retention of up to 30 days and human safety review, which AWS personnel perform inside its boundary; customers set the aws_review retention mode before invoking. Under Enterprise Frontier Safeguards, eligible customers can use Fable 5.2 with zero data retention through June 30, 2027. Developers can reach the model from the Bedrock console, the Anthropic Messages API or AWS SDKs.