Anthropic shares drop after US shuts down AI models

The US government ordered Anthropic to shut down its two most advanced AI models, Fable 5 and Mythos 5, citing national security concerns over a potential jailbreak. Anthropic challenged the directive, arguing the vulnerability was narrow and previously known. The Anthropic perpetual contract on Hyperliquid fell 3.7% to about $1,627, raising questions about the company's pre-IPO valuation.