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Fact-check summary

Multiple outlets (Axios, NYT, Fortune) confirm the U.S. export control order blocking foreign access to Anthropic's Fable 5 and Mythos 5, forcing the company to disable the models for all users.

1 caveat
  • ▲Upcoming Monday meeting with Trump administration officials not yet corroborated by other reports; specific call times and lack of prior warning drawn from anonymous sources.
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via CNBC Tech

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Home/Tech/Anthropic to meet Trump administration over Mythos dispute
VERIFIEDBy Xavier Rivera· ·2 min read

Anthropic to meet Trump administration over Mythos dispute

Senior Anthropic staff will meet Trump administration officials Monday to address an export control order received Friday that requires blocking foreign access to the firm's newest AI systems over an unspecified national security threat. The action follows the Pentagon's March designation of the company as a supply chain risk and continues amid active litigation seeking to reverse that label.

Source:CNBC Tech
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Anthropic to meet Trump administration over Mythos dispute
TL;DRAI · 60 sec read

Anthropic senior staff will meet Trump administration officials on Monday to resolve an export control order blocking access to its Fable 5 and Mythos 5 models for foreign nationals. The company cut off all customers from the systems after receiving the directive. This escalates existing tensions following the Defense Department's earlier blacklist of Anthropic as a supply chain risk.

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Senior staff at Anthropic will hold talks with Trump administration officials in Washington on Monday in an attempt to settle the AI firm's latest clash with federal authorities, a source close to the company reported.

The startup received an export control order late last week that invoked "national security authorities" and directed it to block access to its newest systems, Fable 5 and Mythos 5, "by any foreign national, whether inside or outside the United States," according to a statement.

To comply, the firm immediately cut off every customer from the two releases.
To comply, the firm immediately cut off every customer from the two releases.
The move adds fresh tension to Anthropic's already difficult ties with Washington, which deteriorated after the Department of Defense declared the company a supply chain risk in March, thereby barring defense contractors from its technology on grounds that it purportedly threatens U.S. national security.

Defense Secretary Pete Hegseth responded to the latest order in a Saturday post on X, writing that "every passing day" proves why blacklisting Anthropic was "the right move."

The firm has filed suit against the Trump administration seeking to overturn that designation, and the case remains active.
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Anthropic introduced the two models on Tuesday, only days before the directive arrived. It had collaborated with federal agencies on pre-release testing and obtained clearance to launch them, according to a person familiar with the talks who spoke on condition of anonymity to discuss sensitive issues.
The person added that Anthropic had received no prior warning about any national security concern before the order.
At 1:00 p.m. ET Friday, officials phoned the company and told it to shut down the systems over an unspecified national security threat, the source said. A formal letter followed around 5:30 p.m. ET.

The person added that Anthropic had received no prior warning about any national security concern before the order.

The new systems extend capabilities introduced in the firm's Claude Mythos Preview, which performs strongly at spotting software security flaws. Under the cybersecurity program known as Project Glasswing, rollout was initially confined to a small set of partners; that measured approach reportedly gained some favor with the Trump administration, which held multiple briefings on the technology.

Anthropic described both releases as leading performers across standard industry tests. While Mythos 5 access stays restricted to a narrow user base, the firm had opened Fable 5 to enterprise clients and paying subscribers.
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