When the model vanishes overnight: the lessons from the Fable ban and its implications for your AI supply line
Anthropic’s two most capable models disappeared for everyone in a single evening. For research teams now building on AI, that is a warning worth acting on.
On the evening of 12 June 2026, the US government issued an export control directive, and within hours, Anthropic disabled its two most capable models (Fable 5 and Mythos 5) for every customer worldwide. The order arrived at 5:21 pm Eastern Time. By nightfall, the models were gone.