Anthropic shuts down Fable, Mythos models following Trump admin directive

Anthropic shut down access to its Mythos 5 and Fable 5 models following a US Commerce Department directive imposing export controls. The move was prompted by concerns over a jailbreak method bypassing safeguards for cybersecurity, chemistry, and biology-related prompts, leading the administration to request a pause in model releases to strengthen national security measures.