US Government Orders Anthropic to Suspend Access to Fable 5 and Mythos 5 Models
Anthropic disabled all customer access to its newly launched Fable 5 and Mythos 5 AI models on Friday evening after receiving a U.S. Commerce Department export control directive citing national security concerns. The directive, received at 5:21 p.m. ET on June 12, ordered suspension of access for any foreign national inside or outside the United States, including Anthropic's own non-citizen employees, forcing the company to pull the models entirely to ensure compliance. The unprecedented action marks the first known instance of the U.S. government issuing an export control directive targeting access to a large language model, and escalates an ongoing conflict between Anthropic and the Trump administration.
The U.S. Commerce Department issued an export control directive on June 12, 2026, ordering Anthropic to suspend access to its Fable 5 and Mythos 5 AI models for all foreign nationals, a scope so broad that Anthropic said it had no practical choice but to disable the models for all users globally. Fable 5 had launched just days earlier as a publicly accessible version of Anthropic's advanced Mythos cybersecurity-focused AI, built with safeguards to block high-risk uses in areas such as cybersecurity, biology, and chemistry. The government's letter did not specify its national security concern, but Anthropic said it understands the directive stems from reports of a jailbreak technique; the company characterized the vulnerability as narrow, non-universal, and capable of identifying only minor, previously known software flaws also discoverable by other publicly available models including OpenAI's GPT-5.5. Anthropic disputed the proportionality of the response, arguing that applying this standard industry-wide would effectively halt all frontier AI model deployments, and said the action does not adhere to principles of transparent, fair, and technically grounded regulation. The company is complying with the directive while calling it a likely misunderstanding and pledging to share more technical details within 24 hours. The incident is the latest in a series of confrontations between Anthropic and the Trump administration, which previously designated the company a supply chain risk after a dispute over military use of its models, a designation Anthropic is challenging in federal court. AWS confirmed it had been asked to revoke access for all users in all regions, and the Pentagon's chief information officer publicly endorsed the government's action.
What's missing
The specific legal authority and statutory basis under which the Commerce Department issued this export control directive have not been disclosed publicly, nor has the identity of the party who reported the jailbreak to the government. It also remains unclear what technical threshold or formal review process, if any, the government applied before issuing the directive.
How coverage differed
Left-leaning outlets such as Fortune and Wired gave notable prominence to the political dimension, framing the directive as part of a pattern of Trump administration retaliation against Anthropic and quoting critics who called the move 'cartoonish' or politically motivated. Center-leaning outlets such as Ars Technica and CNBC reported the same facts but placed greater emphasis on the technical details of the jailbreak dispute and Anthropic's compliance, with less focus on the political conflict narrative.
What different sources said
- WiredLeft
Anthropic Says It’s Taking Claude Fable 5 Offline to Comply With US Government Order
- Hacker NewsCenter
We've suspended access to Claude Mythos 5 and Claude Fable 5
- Business InsiderLeft
Anthropic will disable access to Mythos and Fable models to comply with the Trump Administration's export control
- Ars TechnicaCenter
Anthropic shuts down Fable, Mythos models following Trump admin directive
- Hacker NewsCenter
Our response to the US ban on Fable 5 and Mythos 5
- Times of IndiaCenter
As US bans Fable 5 and Mythos 5, Anthropic shares a 700-plus word statement
- EngadgetCenter
Anthropic blocks all customers' access to Fable 5 and Mythos 5
- TechRadarCenter
After a 'potential jailbreak', Anthropic is shutting off access to its Mythos 5 and Fable 5 models under national security orders from the US government
- DawnCenter
Anthropic disables Fable 5, Mythos 5 models after US order limiting foreign access
- FortuneCenter
Anthropic disables Fable and Mythos AI models after U.S. government bars it from giving foreigners access
- EuronewsCenter
Why Anthropic is halting access to its Fable 5 and Mythos 5 AI models
- Yahoo FinanceCenter
Anthropic Suspend Access to Fable 5 and Mythos 5 After US Government Export Directive
- Moneycontrol.comCenter
Zoho former CEO Sridhar Vembu calls Anthropic Fable 5 and Mythos 5 suspension a wake-up call; says...
Anthropic Blocks Foreign Nationals from Using Its Mythos and Fable A.I.
- Hacker NewsCenter
As a result of a US Government directive, we are suspending access to Fable 5
- CNBCCenter
Anthropic disables access to Fable 5 and Mythos 5 to comply with government directive
- Hacker NewsCenter
US Government directive to suspend access to Fable 5 and Mythos 5
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