The company claimed the U.S. government imposed export controls out of concerns that some of the models’ built-in safeguards could be bypassed, a process known as “jailbreaking.”
“To date, the government has only given us verbal evidence of a potential narrow, non-universal jailbreak,” the company said. It added that it disagreed “that the finding of a narrow potential jailbreak should be cause for recalling a commercial model.”
In early April, Anthropic announced it had granted a limited set of trusted tech and cyber firms access to Mythos Preview through the Glasswing project to help them boost cyber defenses.
The decision left many non-U.S. governments and entities, such as the EU institutions, scrambling to get access.
Fable 5, which was launched only this week, is described as a “Mythos-class model” that the company provided with safeguards to make it safe for general use.
“Without safeguards, Fable 5’s capabilities in areas like cybersecurity could be misused to cause serious damage,” Anthropic said at launch.