NSA lost access to Anthropic's Mythos tool amid dispute with the company
The NSA lost access to an Anthropic AI tool called Mythos following a dispute between the agency and Anthropic, according to a New York Times report. The incident suggests friction between a major AI safety-focused lab and a U.S. intelligence agency over terms or conditions of use. This is notable as a signal of how frontier AI labs are navigating government and national security relationships.
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U.S. government allows Anthropic to release restricted 'Mythos' AI model to trusted U.S. organizations
The U.S. government has authorized Anthropic to release a powerful AI model called Mythos to a restricted set of 'trusted' U.S. organizations, suggesting a new government-mediated access tier for frontier AI capabilities. The arrangement implies Mythos has capabilities or risk profiles that warranted export-control-style restrictions on broader release. This represents a notable intersection of national security policy and frontier AI deployment.
MIT Tech Review: Three things to watch in Anthropic's feud with the US government
MIT Technology Review covers an ongoing dispute between Anthropic and the US government, centered on an AI model called Mythos that Anthropic reportedly built. The piece identifies three key developments to monitor as the conflict unfolds. The item signals a significant regulatory or policy confrontation involving a major frontier AI lab.
Zvi Mowshowitz reports US government forced Anthropic to take down Fable and Mythos
According to a post by Zvi Mowshowitz, the United States Government has compelled Anthropic to remove all access to products or models named Fable and Mythos. The nature of the government action and the specific grounds are not detailed in the available excerpt. If accurate, this would represent a significant regulatory intervention against a frontier AI lab.
US government orders Anthropic to suspend access to Fable 5 and Mythos 5 citing national security jailbreak concerns
The US government issued an export control directive requiring Anthropic to immediately disable Fable 5 and Mythos 5 for all foreign nationals, effectively forcing a full customer suspension to ensure compliance. The government cited awareness of a jailbreak method, but Anthropic disputes the severity, stating the demonstrated technique is a narrow, non-universal jailbreak that produces results already achievable by other publicly available models including GPT-5.5. Anthropic is complying with the directive while publicly disagreeing with the standard applied, arguing that requiring perfect jailbreak resistance would halt all frontier model deployments industry-wide. This is a significant regulatory and safety governance flashpoint involving government authority over commercial AI model access.
U.S. Department of War bans Anthropic, contracts OpenAI for classified AI systems after standoff over safety restrictions
The U.S. Department of War designated Anthropic a supply-chain risk to national security after the company refused to remove restrictions on Claude's use for domestic surveillance and autonomous weapons, effectively banning it from military and contractor use. OpenAI signed a contract allowing use of its models 'for all lawful purposes' with ambiguous carve-outs for surveillance and autonomous weapons, which Altman later called rushed and renegotiated. The standoff culminated in a Trump Truth Social post threatening civil and criminal consequences against Anthropic, followed by Hegseth's formal designation. The episode marks a significant precedent: the supply-chain risk designation, previously applied only to foreign companies, was used against a U.S. AI lab over its own usage policies.
The AI Ad-Hoc Prior Restraint Era Begins
Zvi Mowshowitz reports that the White House has ordered Anthropic to halt expansion of access to Mythos, and is considering a broader policy shift to a prior restraint regime requiring government approval before releasing highly capable AI models. This would represent a major reversal of current U.S. frontier AI policy. The commentary analyzes the implications of such a regulatory posture for the AI industry.
Anthropic awarded $200M DOD agreement to prototype frontier AI for national security
The U.S. Department of Defense's Chief Digital and Artificial Intelligence Office (CDAO) has awarded Anthropic a two-year, $200M ceiling prototype other transaction agreement to develop frontier AI capabilities for national security applications. Work will include fine-tuning models on DOD data, adversarial AI risk mitigation, and responsible AI adoption across the defense enterprise. Anthropic will leverage its Claude Gov models and existing partnerships with Palantir and AWS-hosted infrastructure. This is a significant expansion of Anthropic's federal footprint, building on prior deployments with defense and intelligence agencies.
Data Points: Anthropic's Claude Mythos Cybersecurity Claims Face Scrutiny; OpenAI-Cerebras Deal; Meta AI CEO Avatar; Infrastructure Delays
A multi-item digest covers skepticism around Anthropic's Claude Mythos zero-day vulnerability claims (flagged as overstated by Tom's Hardware based on limited 198-case evidence), OpenAI's $20B+ deal with Cerebras for AI processors including a potential ~10% equity stake, and satellite data showing ~40% of U.S. AI data center projects are behind schedule. Additional items cover Meta developing an AI avatar of CEO Zuckerberg for internal use, Moody's flagging credit stress in AI-disrupted sectors, and Luma AI launching an AI-driven film production studio using its Uni-1 model.