The US Treasury Department's technology team is seeking to gain access to Anthropic PBC's Mythos AI model so it can begin hunting for vulnerabilities, according to a person familiar with the situation.

Treasury Chief Information Officer Sam Corcos was aiming to gain access to the model, which Anthropic has been releasing to a limited number of institutions, as soon as this week, the person said, asking not to be identified because the information isn't public. Corcos briefed the Treasury's cybersecurity team on the technology last week and directed it to prepare for the eventual threats from powerful AI systems, the person said.

Treasury didn't respond to requests for comment. Anthropic declined to comment.

Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell summoned Wall Street leaders last week to an urgent meeting on concerns that Mythos will usher in an era of greater cyber risk. Anthropic has warned that the model may be capable of powering cyberattacks if companies don't test it against their own systems and build defenses ahead of any wider release. At the meeting last week, Wall Street leaders were urged to take Mythos seriously and to use it to detect vulnerabilities.

The Treasury Department is seeking access from Anthropic despite the Pentagon labeling the artificial intelligence company a US supply chain risk earlier this year. The government made the declaration after a dispute with Anthropic over how its AI technology may be used by the military, and set a six-month period for the company to hand over AI services to another provider.

The startup is fighting the designation in federal court.

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Corcos -- co-founder of a health tech startup and a part of the Department of Government Efficiency, or DOGE, that Elon Musk led to orchestrate cuts at agencies -- was named Treasury's chief information officer in mid-2025. Corcos had encouraged the use of Anthropic's Claude AI tools within the Treasury's technology team before the company was labeled a supply chain risk, according to the person familiar with the situation.

During testing of Mythos, Anthropic's security team found it was capable of identifying and then exploiting vulnerabilities "in every major operating system and every major web browser when directed by a user to do so." In one case, it wrote a web browser exploit that chained together four vulnerabilities.

In a recent blog, Anthropic introduced an initiative called Project Glasswing through which a limited number of organizations are testing Mythos. Anthropic said in the post that it has been in "ongoing discussions" with government officials about the model and its capabilities. "We are ready to work with local, state, and federal representatives," the startup said.

Wall Street banks themselves have begun testing Mythos internally. While JPMorgan Chase & Co. was the only bank named as part of an initiative to test the Mythos model, other major financial institutions including Goldman Sachs Group Inc., Citigroup Inc., Bank of America Corp. and Morgan Stanley have also gained access, people familiar with the matter told Bloomberg last week.

US Treasury Seeking Access to Anthropic's Mythos to Find Flaws