Claude Opus 4.8 is the central figure in current AI governance debates, shaping access, guardrails, and policy around advanced models.
The US government has issued an export-control directive requiring Anthropic to suspend foreign-national access to its new Claude Fable 5 and Mythos 5 models. Anthropic has disabled the models for all users to comply, disputes the government's evidence of a jailbreak and says it is working to restore access while other models remain available.