Published June 14, 2026
In a twist of fate, Anthropic’s newly launched AI model, Fable 5, appears to have lived up to its name.
The term fable means a short, fictional story designed to teach a specific moral lesson or practical truth.
Just three days after its release alongside Mythos 5, the US government forced Anthropic to shut both models down. The ban was implemented following a legal order stating that any individual who is not a U.S. citizen is prohibited from using the two models.
However, the restriction is applicable to anyone, irrespective of being a U.S. citizen, as there’s no technical mechanism developed by Anthropic to verify citizenship status among users, leading to termination of access.
The legal action was taken following a complaint filed by an anonymous company, which reportedly described a “jailbreak” technique capable of bypassing specific safety protocols.
Considering that, federal officials flagged the vulnerability as a national security risk.
Anthropic has fiercely defended itself, insisting that thousands of hours went into testing its safety systems before the release. Anthropic claims that the safety guardrails implemented on Fable 5 “were stronger than any AI model that has been released ever before.”
Making the system more secure, the company claimed to implement a “defence-in-depth” strategy aimed at protecting multiple layers of protection designed to make any workaround either technically narrow or financially prohibitive.
Despite these preventive measures, the government decided to shut it after a mere verbal notice.
At the time of writing, access to users has been stopped. For some users who barely started their journey with Fable, it turned out to be a fairy tale.
But what practical truth this fable actually taught?
When the U.S. government forced Anthropic to shut down its two newest AI models, it may have done more than kill a product. The move actually sent a chilling message to every investor pouring billions into artificial intelligence.
The implications are staggering for venture capitalists and institutional investors who have poured tens of billions into AI startups.
For investors, this is an even deeper point to consider, as their investment is not truly safe since no AI product is safe to launch. Industry observers are pondering who’s going to invest further when the government can erase companies' products with a verbal notice.
It could not have happened at a worse time for the industry. Investment in AI involves a lot of investment in infrastructure and expensive hardware and software that is not cheap to get. Investors have taken technical risks, but to what extent would they accept regulatory risks?
For now, Fable 5 and Mythos 5 are out of commission. Across the whole of Silicon Valley, the million-dollar question on everyone’s minds is how quickly their next billion might vanish.