Observed Signal · Jun 13, 2026 · Regulation · Source: Trending Topics · Impact: 4/5 · Sentiment: Negative
Anthropic Disables Fable 5 and Mythos 5 on US Government Order
Anthropic has deactivated its newest AI models, Fable 5 and Mythos 5, after receiving a U.S. government export-control directive on June 12, 2026. Citing national security authorities, the order suspends access for all foreign nationals, including Anthropic employees abroad. Because Anthropic cannot separate foreign users in real time, it took the models fully offline. The Commerce Department acted after another company claimed it could jailbreak Mythos, according to a government official who spoke to Axios. Anthropic disputes the severity, arguing the alleged jailbreak is narrow and likely reproducible on other public models such as OpenAI's GPT-5.5. The move follows escalating tensions: on February 27, 2026, the Pentagon designated Anthropic a 'Supply Chain Risk' after contract negotiations failed over the use of AI for mass surveillance and autonomous weapons. OpenAI subsequently announced a defense deal. Anthropic has filed two lawsuits while complying with the order.
The U.S. government forcing a leading AI company to take down flagship models over national security sets a major precedent for AI regulation and affects global availability of frontier AI, with broad implications for AI-dependent industries including marketing technology.
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Key Takeaways & Evidence Grounding
- On June 12, 2026, Anthropic received a U.S. government export-control directive ordering it to suspend access to Fable 5 and Mythos 5 for foreign nationals.
- Anthropic deactivated both models globally because it could not separate foreign nationals from other users in real time.
- The U.S. Commerce Department took action after another company claimed it could jailbreak Mythos, according to a government official speaking to Axios.
- On February 27, 2026, the Pentagon designated Anthropic as a 'Supply Chain Risk' after failed contract negotiations.
- Anthropic has filed two lawsuits and complied with the order while stating it believes the measure is wrong.
Connected Companies & Entities
3 Entities mapped“Anthropic announced it received an export-control directive on June 12, 2026 and deactivated Fable 5 and Mythos 5....”
“Anthropic argued the same jailbreak could be applied to other publicly available models, including OpenAI's GPT-5.5....”
“A government official told Axios that the Commerce Department decided to act after another company claimed it could jailbreak Mythos....”
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