BBC reported July 1, 2026 that US Commerce Department lifted export ban on Anthropic Fable 5 and Mythos 5. Models suspended June 12 over hacker exploitation concerns after jailbreak enabled vulnerability identification and exploitation code.
Commerce Secretary Howard Lutnick letter: Anthropic agreed to proactively detect security risks, collaborate on future releases, alert government of malicious activity. Department reserves right to reconsider.
Fable 5: consumer-market version with more safeguards. Mythos 5: business/cybersecurity version identifying and exploiting code vulnerabilities. Both released June 9, 2026. Anthropic said authorities had not pinpointed specific technology concerns when ordering suspension.