June 12, 2026 — The US Commerce Department ordered Anthropic to suspend access to its Claude Fable 5 and Claude Mythos 5 models under export-control rules, prompting a brief worldwide shutdown before access was restored around July 1.
What happened
Citing a claimed jailbreak with national-security implications, Commerce ordered Anthropic to cut off foreign access to the two models under the Export Administration Regulations. Because Anthropic could not verify user nationality for every account in real time, it suspended access globally rather than only for the flagged accounts. Commerce Secretary Howard Lutnick confirmed the order was withdrawn around July 1, and Anthropic began restoring service on July 8.
Why it matters
This marked one of the first times a commercially available frontier AI model service was directly restricted under US export-control authority, establishing a precedent that AI labs’ global service availability can be interrupted by national-security-driven trade enforcement with very short notice.
Security and infrastructure impact
Enterprises running Claude Fable 5-dependent production workloads experienced an unplanned multi-week disruption, underscoring why AI vendor-risk planning should account for export-control and geopolitical suspension risk alongside conventional outage and security incidents.
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