government-regulation

Anthropic is redeploying Claude Fable 5 after a month-long government-mandated takedown triggered by Amazon researchers discovering a method to bypass the model's cybersecurity safeguards. The returning version includes enhanced safety classifiers that automatically block cybersecurity tasks and revert to Opus 4.8, with restricted availability through usage credits only.

Anthropic will restore access to Claude Fable 5 on July 1, 2026, after the US Department of Commerce lifted export controls that forced the company to disable the model on June 12. The controls were imposed after Amazon researchers allegedly demonstrated that specific prompts could elicit information useful for cyberattacks.

The US government has authorized Anthropic to redeploy its Mythos 5 cybersecurity AI model to more than 100 US institutions, including major corporations and government agencies, following a two-week suspension. Commerce Secretary Howard Lutnick approved the redeployment after Anthropic implemented safeguards and committed to work with the government on release protocols.

The Trump administration is allowing Anthropic to deploy Claude Mythos 5 to over 100 specific US government agencies and companies, two weeks after banning the cybersecurity model. Commerce Secretary Howard Lutnick approved access for organizations operating critical infrastructure, including non-American employees, though Fable 5 remains unavailable.

The U.S. government approved Anthropic's release of its Mythos 5 model to roughly 100 companies and federal agencies on Friday. The limited distribution marks a controlled rollout requiring government clearance.

Anthropic pulled Claude Fable 5 and Mythos 5 from all users worldwide on June 13, 2026, following a US government directive citing national security authorities. The directive, issued with approximately 90 minutes notice, claimed awareness of a jailbreak method, though Anthropic disputes the severity and uniqueness of the vulnerability.

Anthropic disabled all customer access to its Fable 5 and Mythos 5 AI models on June 12, 2026, following a US government order citing national security concerns. The government mandated suspension of access for all foreign nationals, including Anthropic employees, based on evidence of a potential jailbreak method for Fable 5.

The U.S. government ordered Anthropic to immediately shut down access to Claude Fable 5 and Claude Mythos 5 on Friday, citing national security concerns. Anthropic received the directive at 5:21 pm ET and has complied, disabling both models worldwide, but says the government received only verbal evidence of a 'potential narrow, non-universal jailbreak.'

The US government has ordered Anthropic to immediately suspend access to its Fable 5 and Mythos 5 models for all users, citing national security concerns over an alleged jailbreak technique. Anthropic states the directive, received at 5:21pm ET, provided no specific details beyond a claimed bypass method that other publicly-available models can already perform.

Anthropic disabled its Fable 5 and Mythos 5 AI models on Friday after receiving a U.S. government export control order at 5:21 p.m. ET. The directive, citing national security authorities, instructed the company to suspend all access by foreign nationals, including its own employees.