美国政府，下架了 Fable 5

这真是「震惊到瘫坐」了

今天一大早，Fable 5 被美国政府下架了：谁都别用

此刻的你，如果尝试使用 Fable，大概会收到这么个通知：

作为背景，Anthropic 凌晨收到了一纸管制令：禁止全世界任何外国人访问 Fable 5 和 Mythos 5，身处美国境内也不行

而且，就连 Anthropic 自己的外籍员工都不许碰，然后就有了下面的这个声明

https://x.com/AnthropicAI/status/2065597531644743999

由于没法按国籍切分用户，Anthropic 只能全员下线

历史上第一次，政府召回了一个已经上线的商用大模型

至于政府的证据...其实挺荒谬的，就是口头跟 Anthropic 描述了一下「有人这么越狱过」，而所谓越狱内容就是让模型读一段代码、把里面的 bug 修好...反正没觉得有啥危险，就是修个bug，压根用不着越狱

但欲加之罪，何患无辞，哈哈哈哈哈

对此，美国的一个政治媒体 Axios 给了内幕：

• 信是商务部长 Howard Lutnick 亲签给 Dario Amodei 的，举报另有其人

• 而这个模型政府并不想让 Anthropic 发出来，所有才有的后续一系列事件

• 指令还要求 Anthropic 往后逐案申请出口许可证，违者罚款加民事处罚

对于白宫与A社，两家之前便有恩怨。今年 3 月，五角大楼把 Anthropic 列为「供应链风险」，Anthropic 在旧金山和华盛顿两地起诉了政府，官司至今没打完：

官方声明全文

以下为 Anthropic 官方声明的逐段中英对照

原文：anthropic.com/news/fable-mythos-access

The 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.

美国政府援引国家安全权限，发布了一项出口管制指令，要求暂停任何外国人对 Fable 5 和 Mythos 5 的访问，无论其身处美国境内还是境外，包括 Anthropic 的外籍员工。这项命令的实际效果是：为确保合规，我们必须立即对所有客户停用 Fable 5 和 Mythos 5。对 Anthropic 其他所有模型的访问不受影响

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.

我们于今天下午 5 点 21 分（美东时间）收到政府指令。信函没有提供其国家安全关切的具体细节。据我们理解，政府认为自己掌握了一种绕过（即「越狱」）Fable 5 的方法。我们查看了这一技术的演示：它被用于找出少量此前已知的小漏洞。这些漏洞看起来都相当简单，而且我们发现，其他公开可用的模型不需要任何绕过手段也能发现它们

Anthropic's posture with respect to Fable's safeguards, as laid out in our launch blog post, is the following:

正如发布博客所述，Anthropic 对 Fable 安全防护的立场如下：

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.

我们设置了强力的安全防护，大幅降低 Fable 被滥用于网络安全等任务的可能性。事实上，我们的防护强到许多用户抱怨它管得太宽

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.

在 Fable 发布前的几周里，Anthropic 与美国政府、英国 AISI、多家第三方机构及内部团队合作，对 Fable 的防护做了总计数千小时的红队测试

These tests showed that Fable's safeguards are substantially more effective than those of any previously deployed model.

这些测试表明，Fable 的防护效果显著优于此前部署过的任何模型

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.

至今没有任何测试者找到「通用越狱」，即能广泛绕过模型防护、解锁大范围网络能力的越狱方法

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.

我们猜测，目前没有任何模型提供商能做到完美的抗越狱。业内使用的每一种防护都存在「非通用越狱」的风险（在特定情况下套出某些网络信息），通用越狱未来也很可能被找到。我们在发布 Fable 5 时已经明确说过这一点

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.

既然完美的抗越狱在今天看来并不可能，Anthropic 在 Fable 5 上采取了纵深防御策略。我们的目标是让越狱要么很窄（非通用越狱的情形），要么制作成本极高（通用越狱的情形），并配合全面监控，快速发现并阻断任何成功的攻击。这也是 Anthropic 要求对 Fable 客户数据做 30 天留存的原因，这一政策变化让我们在客户那里付出了实打实的代价，但它让我们能够研究和缓解越狱

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.

我们坚持这一纵深防御策略。它降低了 Fable 带来的风险，使其与业内已部署模型的风险相当

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.

我们甚至没有收到过任何一份「造成有害结果的非通用潜在越狱」的披露。已披露给我们的潜在越狱，要么是完全无害的回复，要么是不构成任何 Mythos 级增益的小发现

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.

到目前为止，政府只向我们口头提供了一个潜在的窄域、非通用越狱的证据，其内容大致是让模型读取一个特定代码库并修复其中的软件缺陷。据我们理解，有一个潜在越狱被分享给了政府。我们审阅了一份我们认为是政府指令依据的报告，并验证了其中展示的能力水平在其他模型（包括 OpenAI 的 GPT-5.5）上广泛可得，而且防御者们每天都在用这类能力保护系统安全。我们将在接下来的 24 小时内公布更多细节

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.

我们正在遵守政府的合法指令，对所有用户移除 Fable 5 和 Mythos 5 的访问。但我们不认同「发现一个窄域潜在越狱」可以成为召回一个服务数亿人的商用模型的理由。如果这一标准适用于全行业，我们认为它将基本叫停所有前沿模型提供商的新模型部署

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.

正如我们公开声明过的，我们认为政府应当有能力阻止不安全的部署，但这应当是一个透明、公平、清晰、立足于技术事实的法定程序的一部分。此次行动不符合这些原则

We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.

我们为这次对客户造成的干扰致歉。我们相信这是一场误会，正在努力尽快恢复访问

现在还能不能用

官方口径是立即全部停用，声明原文用词是 abruptly disable，美国媒体也都按「已停用」在报道

但执行和公告之间有明显的时间差：在我撰写本文的时候，还能用

网页端

到了本文发出的时候，我手里的Fable也不能用了

至于其他模型，比如：Opus、Sonnet、Haiku 一切照常

→ 官方声明：anthropic.com/news/fable-mythos-access

→ 发布博客：anthropic.com/news/claude-fable-5-mythos-5

→ Axios 报道：axios.com/2026/06/12/anthropic-trump-mythos-fable-national-security