AI Breakthrough: Claude Mythos 5 gets the "green light" for top 100 US organizations, Fable 5 is next
The U.S. administration has officially lifted export restrictions on Anthropic's powerful language model, Mythos 5. This decision, made on Friday, opens access to cutting-edge technology for over 100 American organizations, including major corporations and government agencies. This move ends a two-week standoff between the White House and the developer, but the fate of the more advanced Fable 5 model for a wider audience remains uncertain.
Mythos 5: From Secret Project to Mass Adoption
Commerce Secretary Howard Lutnick, in a letter to Anthropic's Chief Technology Officer Tom Brown, confirmed that a license is no longer required to transfer Mythos 5 to organizations on Appendix A. "Existing safeguards allow certain verified partners to access the model," he noted. Previously, Mythos was used exclusively within the Glasswing program, an initiative to find vulnerabilities involving about 150 organizations from 15 countries. Within hours of testing, the model identified critical errors in classified government systems, spurring demand for its commercialization.
Fable 5: A Pause Before New Rules
Unlike Mythos, access to Fable 5, which was previously open to all subscribers and considered the most powerful public AI tool, is now frozen. The reason is concerns from investors, particularly Amazon, regarding safety. Researchers warned that the model could be hacked for potentially dangerous purposes.
The situation is complicated by new regulations. On June 2, an executive order was signed creating a voluntary federal review channel for advanced AI models. Developers can submit their solutions for cybersecurity checks 30 days before launch. This mechanism, combined with stricter chip export controls to China, is shaping a new control architecture. OpenAI has already followed this path, restricting access to the most powerful version of GPT-5.6 (Sol) to about 20 state-approved partners.
Global Context and Market Pressure
Initially, the blocks were driven by fears that the technology could reach China. Attention was focused on South Korean operator SK Telecom, which was temporarily added to the Glasswing list and then had its access restricted. SK Telecom denied any connection to China. Cybersecurity leaders, including former Facebook security chief Alex Stamos, as well as representatives from Nvidia, Adobe, and Zoom, urged authorities to drop excessive restrictions.
Europe and other regions find themselves heavily dependent on Washington's decisions regarding access to new developments. Whether Fable 5 will receive similar permissions will become clear in the coming days.
My analysis: The decision on Mythos 5 is not just a lifting of the ban, but a signal to the market about the formation of a two-tier system for AI access. "Elite" access for verified partners and "public" access with restrictions are becoming the new norm. For investors in crypto and cybersecurity, this means that projects related to the verification and security of AI agents will receive a powerful boost.