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Anthropic said Friday that the U.S. government has allowed it to release its powerful Claude Mythos 5 artificial intelligence model to a group of “trusted” U.S. organizations, partially reversing an order issued two weeks ago that suspended access over national security concerns, News.Az reports, citing Reuters.
More than 100 companies and institutions will now receive access to Mythos 5, including several Fortune 500 companies, according to a source familiar with the new directive who declined to be identified due to the sensitivity of the matter.
Concerns that advanced AI systems could be misused by military and intelligence users in China, Russia or other countries of concern have led President Donald Trump’s administration to take a stricter approach toward overseeing releases of Anthropic’s and rival OpenAI’s most advanced models.
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Earlier on Friday, OpenAI said it was delaying a full public launch of GPT-5.6 at the U.S. government’s request, restricting access to a small group of approved partners whose details were shared with authorities.
Anthropic had previously disabled access to its most advanced AI models — Mythos 5 and Fable 5 — for all users following the government’s June 12 export control order.
“Today, the government notified us that Mythos 5, our strongest cybersecurity model, can be redeployed to a set of U.S. organizations that operate and defend critical infrastructure,” Anthropic said in a statement on Friday.
“We’re restoring access for these organizations quickly, and we’re continuing to work with the government to expand access to Mythos 5 and make Fable 5 available for general use again,” the company added.
The government’s process for selecting which companies can access Mythos 5 has drawn criticism.
“No one knows how these companies are picked and why everyone else is excluded,” said John Coleman, legislative counsel for the Philadelphia-based nonpartisan free speech organization, the Foundation for Individual Rights and Expression.
“This is putting too much power in the hands of the government. There’s little transparency and it raises questions about the rule of law,” he added.
OpenAI CEO Sam Altman also raised concerns about the government deciding which organizations can access leading AI models in a post on X.
“Extensive safety testing is not a bad idea. I just don’t like the idea of the government picking the customers,” Altman wrote.
Experts have warned that Mythos models, if misused, could significantly accelerate sophisticated cyberattacks, especially in sectors such as banking that depend on complex, interconnected and often decades-old technology systems.
A letter from U.S. Commerce Secretary Howard Lutnick to Anthropic said there had been “significant progress” in the company’s work with the government to address “risks associated with the Covered Models.”
It was not immediately clear what safeguards had been introduced. Anthropic said earlier this month that it understood the government believed there was a way to bypass, or “jailbreak,” a safeguard designed to prevent Fable 5 from being used to identify software vulnerabilities.
News.Az
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