U.S. Government Slams National Security Order on Anthropic, Forcing Immediate Global Shutdown of Mythos 5 and Fable 5 ModelsArtificial intelligence pioneer Anthropic has revealed that it has received an emergency National Security Directive from the United States government. The sweeping federal mandate legally prohibits foreign nationals both inside and outside the United States as well as Anthropic’s own foreign-national employees, from accessing or interacting with its newly released flagship AI architectures, Mythos 5 and Claude Fable 5, which debuted just days ago.
To ensure strict, immediate compliance with the federal enforcement, Anthropic has taken the drastic measure of suspending access to Mythos 5 and Fable 5 for all global clients and enterprise customers, effective immediately. The company clarified that its legacy model tiers remain unaffected by the lockdown and continue to operate within standard parameters.
According to Anthropic, the classified government directive refrained from disclosing the granular details regarding the specific vulnerabilities triggering the ban.
However, Anthropic’s executive leadership theorizes that the intervention stems from federal anxieties surrounding model "jailbreaking" vulnerabilities specifically, concerns that bad actors could bypass system guardrails to exploit the frontier models for dangerous, dual-use capabilities.
Anthropic countered this rationale by stating that jailbreaking risks are endemic across the entire global AI ecosystem and are not isolated to their 5.0 architecture lineup. While Anthropic explicitly stated its disagreement with the severity of the government’s unilateral order, the company affirmed its commitment to regulatory compliance and is actively seeking urgent discussions with federal agencies to resolve the operational deadlock.
The earlier complaints about Claude Fable 5's "over-refusal," or paranoia that led it to refuse to answer basic questions like those about DNA or computer code decoding, were, from an analyst's perspective, Anthropic's initially unusually stringent security measures. In reality, this might have been a desperate attempt by the company to deceive and prevent the model from being hacked, thus avoiding government intervention to shut it down under security pretexts. Ultimately, however, the US government still viewed Fable 5 and Mythos 5 as possessing excessive computational power, posing a risk of being exploited by adversaries to escalate cyberattacks and develop biological weapons.
The government's explicit prohibition against even foreign employees accessing Anthropic was a major blow to the Silicon Valley industrial structure, impacting global startups and tech companies in the US. The US government's heavy reliance on foreign safety researchers and top-tier programmers (such as those holding H-1B visas or green cards) reflects its extreme paranoia about "insider threats" or technological espionage. Banning its own employees from accessing the code or models it develops demonstrates this extreme paranoia, significantly hindering and delaying the fine-tuning and development of cutting-edge AI.
This event serves as undeniable evidence that the era of industrial freedom in AI has ended, and we are moving towards the era of sovereign AI. The US government's audacious move to immediately shut down the commercial models of private companies sends a warning signal to competitors like OpenAI, Google, and Meta that advanced frontier models exceeding security benchmarks will be treated as "controlled weapons" under export controls, no longer merely ordinary application software.
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Source: Anthropic
U.S. Government Slams National Security Order on Anthropic, Forcing Immediate Global Shutdown of Mythos 5 and Fable 5 ModelsArtificial intelligence pioneer Anthropic has revealed that it has received an emergency National Security Directive from the United States government. The sweeping federal mandate legally prohibits foreign nationals both inside and outside the United States as well as Anthropic’s own foreign-national employees, from accessing or interacting with its newly released flagship AI architectures, Mythos 5 and Claude Fable 5, which debuted just days ago.
To ensure strict, immediate compliance with the federal enforcement, Anthropic has taken the drastic measure of suspending access to Mythos 5 and Fable 5 for all global clients and enterprise customers, effective immediately. The company clarified that its legacy model tiers remain unaffected by the lockdown and continue to operate within standard parameters.
According to Anthropic, the classified government directive refrained from disclosing the granular details regarding the specific vulnerabilities triggering the ban.
However, Anthropic’s executive leadership theorizes that the intervention stems from federal anxieties surrounding model "jailbreaking" vulnerabilities specifically, concerns that bad actors could bypass system guardrails to exploit the frontier models for dangerous, dual-use capabilities.
Anthropic countered this rationale by stating that jailbreaking risks are endemic across the entire global AI ecosystem and are not isolated to their 5.0 architecture lineup. While Anthropic explicitly stated its disagreement with the severity of the government’s unilateral order, the company affirmed its commitment to regulatory compliance and is actively seeking urgent discussions with federal agencies to resolve the operational deadlock.
The earlier complaints about Claude Fable 5's "over-refusal," or paranoia that led it to refuse to answer basic questions like those about DNA or computer code decoding, were, from an analyst's perspective, Anthropic's initially unusually stringent security measures. In reality, this might have been a desperate attempt by the company to deceive and prevent the model from being hacked, thus avoiding government intervention to shut it down under security pretexts. Ultimately, however, the US government still viewed Fable 5 and Mythos 5 as possessing excessive computational power, posing a risk of being exploited by adversaries to escalate cyberattacks and develop biological weapons.
The government's explicit prohibition against even foreign employees accessing Anthropic was a major blow to the Silicon Valley industrial structure, impacting global startups and tech companies in the US. The US government's heavy reliance on foreign safety researchers and top-tier programmers (such as those holding H-1B visas or green cards) reflects its extreme paranoia about "insider threats" or technological espionage. Banning its own employees from accessing the code or models it develops demonstrates this extreme paranoia, significantly hindering and delaying the fine-tuning and development of cutting-edge AI.
This event serves as undeniable evidence that the era of industrial freedom in AI has ended, and we are moving towards the era of sovereign AI. The US government's audacious move to immediately shut down the commercial models of private companies sends a warning signal to competitors like OpenAI, Google, and Meta that advanced frontier models exceeding security benchmarks will be treated as "controlled weapons" under export controls, no longer merely ordinary application software.
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Source: Anthropic
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