Anthropic Redeploys Fable 5 and Mythos 5 with Enhanced Security Classifiers (infosecurity-magazine.com)

• US lifts export controls on Anthropic's Fable 5 and Mythos 5
• New classifier blocks identified jailbreak in over 99% of tested cases
• CAISI confirms safeguards as 'extraordinarily strong'

"Anthropic has redeployed Claude Mythos 5 and Claude Fable 5 after the US government lifted export controls imposed 19 days earlier. Fable 5 now includes a new safety classifier that blocks the specific jailbreak technique that triggered the controls in over 99% of cases. The US Commerce Department's CAISI tested the safeguards and called them 'extraordinarily strong.'"