The U.S. just reopened Anthropic’s Claude Mythos 5 for more than 100 approved institutions.

More than 100 companies and institutions will now have access to Mythos 5, incluing many Fortune 500 companies

“I have determined that appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model,” Commerce Secretary Howard Lutnick wrote to Anthropic’s chief compute officer Tom Brown on Friday.

The exact Annex A list has not been made public.

The earlier Project Glasswing’s public founding group included AWS, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks, but that public partner list is not the same thing as the secret Annex A list.

The government seems to be prioritizing institutions where defensive upside is highest and misuse risk is easier to manage: cloud providers, chip companies, operating-system vendors, security firms, banks, infrastructure operators, and federal agencies.

Semafor reports.