Where Rhynowerks Stands on the Fable 5 and Mythos 5 Suspension
The tools you build a business on are only as steady as the ground under the companies that make them. On June 12, that ground shifted.
Yesterday the US government ordered Anthropic to suspend access to two of its AI models, Fable 5 and Mythos 5, citing national security. Rhynowerks uses AI every day to help people turn what they know into something they own, so when something like this happens, you deserve to hear it straight and you deserve to know where we stand. Below is Anthropic’s full statement, followed by ours.
This matters to you whether or not you have ever touched these specific models. The reporting is real and widely covered. Bloomberg, CNBC, NBC News, and Fortune all confirmed it on June 12 and 13, and Anthropic posted its own statement. We are reproducing that statement in full, in Anthropic’s words, so you can read the primary source and judge it for yourself.
Anthropic’s statement, in full
Statement on the US government directive to suspend access to Fable 5 and Mythos 5
June 12, 2026The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Anthropic models will not be affected.
We received the directive from the government today at 5:21pm (ET). The letter did not provide specific details of its national security concern. Our understanding is that the government believes it has become aware of a method of bypassing, or “jailbreaking” Fable 5. We reviewed a demonstration of this specific technique being used to identify a small number of previously known, minor vulnerabilities. These vulnerabilities all appear relatively simple, and we have found that other publicly-available models are able to discover them as well without requiring a bypass.
Anthropic’s posture with respect to Fable’s safeguards, as laid out in our launch blog post, is the following:
- We have instituted strong safeguards that greatly reduce the likelihood that Fable is misused for tasks related to cybersecurity (among others). In fact, our safeguards are so strong that many users have complained that they are overly broad.
- In the weeks leading up to the launch of Fable, Anthropic worked with the US government, the UK AISI, multiple private third-party organizations and internal teams to red-team Fable’s safeguards for thousands of hours in total.
- These tests showed that Fable’s safeguards are substantially more effective than those of any previously deployed model.
- No testers have yet been able to find a universal jailbreak, a jailbreak method that can very broadly bypass the model’s safeguards, unblocking a wide range of cyber capabilities.
- We suspect that perfect jailbreak resistance is not currently possible for any model provider. Every safeguard used in the industry is vulnerable to non-universal jailbreaks (which can elicit some cyber information in specific circumstances), and it is likely that universal jailbreaks will eventually be found in the future. We stated this clearly when we released Fable 5.
- Given that perfect jailbreak resistance does not appear to be possible today, Anthropic adopted a defense in depth strategy with Fable 5. We aimed to make jailbreaks either narrow (in the case of non-universal jailbreaks) or very expensive to produce (in the case of universal jailbreaks), and to combine this with thorough monitoring to quickly detect and shut down any successful attacks. This is also why Anthropic has required 30-day retention of customer data with Fable, a policy change that carries real costs for us with customers, but that allows us to research and mitigate jailbreaks.
- We stand by this defense in depth strategy. It reduces the risks posed by Fable, making them comparable to the risks of existing models already deployed across the industry.
- We have not even received a disclosure of a concerning non-universal potential jailbreak that led to a harmful result. The potential jailbreaks that have been disclosed to us are either entirely benign responses or are minor findings that provide no Mythos-specific uplift.
To date, the government has only given us verbal evidence of a potential narrow, non-universal jailbreak, which essentially consists of asking the model to read a specific codebase and fix any software flaws. Our understanding is that one potential jailbreak was shared with the government. We have reviewed a report that we believe is the basis of the government’s directive and validated that the level of capability displayed there is widely available from other models (including OpenAI’s GPT-5.5), and is used every day by the defenders who keep systems safe. We will share more details over the next 24 hours.
We are complying with the government’s legal directive and are removing access to Fable 5 and Mythos 5 for all users. However, we disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people. If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers.
As we have stated publicly, we believe the government should have the ability to block unsafe deployments, as part of a statutory process that is transparent, fair, clear, and grounded in technical facts. This action does not adhere to those principles.
We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.
Source: Anthropic’s statement, June 12, 2026.
Where Rhynowerks stands
A few honest words from us.
This is concerning for everyone who uses AI, not just for Anthropic. The people in this community are building real things on these tools: courses, coaching, second careers. When access to a model can be pulled overnight, that uncertainty lands on the small operator just as hard as it lands on the company. You have a right to know the ground can move, and a right to expect the companies you rely on to handle it openly.
Rhynowerks supports Anthropic’s stated commitments here. Anthropic says it built strong safeguards, tested them for thousands of hours with government and independent reviewers, and is complying with the law even while it disagrees with the call. It is also asking for what any of us would want in its place: a process that is transparent, fair, and grounded in technical facts. That is a reasonable thing to stand for, and we stand with it.
We also want to be clear-eyed. Safety and openness are not opposites. The reason this community trusts the work we do is that we hold both at once. We will keep doing that. We will keep choosing tools from companies that take safety seriously and tell the truth when something goes wrong, and we will keep telling you the truth in turn.
Nothing about your work with Rhynowerks changes today. The tools we build our courses and toolkit on are unaffected by this order, and your path to packaging your expertise is exactly where it was yesterday. We are simply doing what we would want done for us: telling you what happened, pointing you to the source, and saying plainly where we stand.
The Bottom Line
A government directive pulled two AI models overnight, and while it does not change your work with us, it is a real reminder that the companies behind these tools owe us safety and honesty, and Rhynowerks stands with Anthropic’s commitment to both.