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Anthropic Pulls Claude Fable and Mythos AI Models After Feds Claim Jailbreak
cnet ^ | 06/15/2026 | Jon Reed

Posted on 06/15/2026 7:58:02 AM PDT by BenLurkin

Anthropic pulled access to its newly released AI models Mythos 5 and Fable 5 over the weekend after the US government imposed sweeping restrictions on who could use them.

The AI lab said in a statement that the federal government told it Friday afternoon that it had become aware of a way of "jailbreaking" Fable 5, bypassing limits that Anthropic had implemented to reduce the risk the model could be misused. When Anthropic first announced Mythos, it released the software only to a select group of government agencies and technology professionals because of its ability to uncover cybersecurity vulnerabilities.

The government imposed what are known as export controls on the products, which Anthropic said means it had to suspend access to the two models by any foreign national, whether inside or outside of the US. The only way it could do so is by shutting the models down entirely, the company said.

Anthropic said late Friday that it disagreed that the jailbreak it was shown warranted such sweeping action, and that such a standard could "essentially halt" new frontier AI models if applied broadly.

(Excerpt) Read more at cnet.com ...


TOPICS: Computers/Internet
KEYWORDS: anthropic; fable5; mythos5; projectglasswing

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1 posted on 06/15/2026 7:58:02 AM PDT by BenLurkin
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To: BenLurkin

That means that a large number of Anthropic developers can’t access the LLM they helped create, since they’re not US citizens. I assume the restriction will be dropped after the jailbreak ability is patched, but when a large percentage of Anthropic’s engineers can’t actually work on the issue, it might take longer than expected.


2 posted on 06/15/2026 8:02:01 AM PDT by AnotherUnixGeek
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To: AnotherUnixGeek

I think user tasks will be routed to older versions or something like that.


3 posted on 06/15/2026 8:08:13 AM PDT by BenLurkin (The above is not a statement of fact. It is opinion or satire. Or both.)
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To: BenLurkin

AI is code and can’t be prompted into being smarter


4 posted on 06/15/2026 8:25:43 AM PDT by butlerweave (Fateh)
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Anything can be jailbroken. Some make a sport of it.


5 posted on 06/15/2026 8:43:39 AM PDT by proust (All posts made under this handle are, for the intents and purposes of the author, considered satire.)
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To: BenLurkin

I have no doubt that all the source code available, and machines capable of running it, are in these other countries, and beyond.

The export constraint is really only affecting Anthropic’s ability to put sales on a ledger and to having the foreign developers connect to US assets.


6 posted on 06/15/2026 9:28:12 AM PDT by ConservativeMind (Trump: Befuddling Democrats, Republicans, and the Media for the benefit of the US and all mankind.)
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