Trump administration officials tell WIRED that if Anthropic wants to rerelease Fable 5, it will need to ensure the model's guardrails can't be circumvented. Security experts say that can't be done. The Trump administration's disagreement with Anthropic over its most advanced AI models appears to be fast coming to a head. Trump officials tell Inner Loop that if Anthropic wants to rerelease Claude Fable 5, the AI model that they took offline with export controls last week over concerns about jailbreaking--a method of using prompts to get around a model's safeguards--the company will need to take steps to actually address what the government alleges are vulnerabilities. Anthropic has said for days that the administration's concerns are overblown and that the effects of the jailbreaks are minimal.

'Dangerous' AI Models Are Coming No Matter What The US government crackdown on Anthropic's Claude Fable 5 and Mythos 5 hides a glaring truth: AI models with advanced hacking capabilities will soon be the norm. Late last week, Anthropic took its new Claude Fable 5 and Mythos 5 AI models offline following a United States government export-control directive barring "any foreign national" from using the services. The company has been in talks with the White House since Friday but has yet to secure an agreement that would allow it to reinstate the offerings. Since Mythos debuted in April, Anthropic has claimed--and warned--that the model has advanced capabilities for not only finding software vulnerabilities to help defenders patch them, but also figuring out ways to exploit them that could be used by bad actors. Anthropic itself noted this double edged sword in its launch of Mythos 5 and Claude Fable 5. "A great deal of advanced usage of AI models is dual use: the same queries that are beneficial in the hands of cybersecurity professionals and biology researchers could be dangerous if available to malicious actors," the company wrote in a blog post last week.

Anthropic leaders flew to Washington, DC, to meet with White House officials on Monday. Trump administration officials concluded talks with Anthropic on Monday without lifting export controls that were imposed last week on the company's most advanced AI models in response to jailbreaking concerns, according to three people briefed on the matter. The administration continues to believe that there are ways to disable some of the guardrails on Anthropic's Claude Fable 5, effectively allowing users to access the more powerful cybersecurity capabilities of the company's Mythos model, the people said. Anthropic has said for days that the administration's concerns are overblown, a position it reiterated in working group meetings held at the Commerce Department with government researchers from Center for AI Standards and Innovation (CAISI) and the Office of the National Cyber Director Sean Cairncross, one of the people said. The meetings were also attended by Commerce secretary Howard Lutnick, who dialed in by conference call from the G7 summit in Evian, France.

Anthropic has suspended its powerful new AI model after US authorities raised security concerns just days following its public release. In a statement published on its website, Anthropic said it was ordered to suspend foreign nationals from using Claude Fable 5, a program that the company self-described as too powerful. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance, the company wrote. Anthropic and the Trump administration are involved in a separate ongoing lawsuit over an order to stop government agencies using the company's AI tools. The BBC has approached the US Department of Commerce for comment.

Anthropic Says It's Taking Claude Fable 5 Offline to Comply With US Government Order "The government believes it has become aware of a method of bypassing, or'jailbreaking' Fable 5," the company said in a blog post. Anthropic says it's disabling two AI models it launched earlier this week, Claude Fable 5 and Mythos 5, to comply with an export control directive it received Friday afternoon from the US government citing national security concerns. The unprecedented incident marks the latest flashpoint between Anthropic and the Trump administration . While the company says the order asked it to suspend access to "any foreign national, whether inside or outside the United States, including foreign national Anthropic employees," it has removed access for all of its customers to ensure compliance. Earlier this year, Trump's Department of Defense labeled Anthropic a " supply chain risk " after the Claude-maker sought to draw red lines over how the US military could use its technology.

Anthropic Walks Back Policy That Could Have'Sabotaged' AI Researchers Using Claude The company changed course after researchers spoke out against the policy, which would have covertly limited Claude's ability to develop competing AI models. Anthropic is backtracking on a policy that would have covertly limited competitors from using its new AI model, Claude Fable 5, to develop other AI models. The company changed course after the move received significant backlash from the AI research community . "We're changing Fable 5's safeguards for frontier LLM development to make them visible," Anthropic said in a statement to WIRED. "We made the wrong tradeoff and we apologize for not getting the balance right."

Anthropic's Claude Fable 5 AI model is now publicly available through the Claude desktop app, showing major improvements in coding, spatial reasoning, and cybersecurity capabilities. PCWorld reports that paid subscribers can access this powerful "Mythos-class" model until June 23rd, after which it requires separate usage credits due to capacity constraints. The release includes conservative safeguards due to extreme cybersecurity capabilities that could potentially be misused, with a less-restricted version available only to select cyberdefenders.

Anthropic Offers Mythos Upgrade for Cyber Partners and a'Safe' Version for the Rest of You Anthropic is releasing Claude Mythos 5 to trusted organizations and Claude Fable 5 to the public, a version it says can't be used for cyberattacks. Anthropic released two new AI models called Claude Fable 5 and Claude Mythos 5 on Tuesday, which the company says have greater capabilities than the Mythos Preview model it released in April to a limited set of tech industry partners. Anthropic has said the initial, limited release stemmed from concerns that the model's capabilities could be exploited by bad actors to develop hacking tools that could catch defenders off guard. Anthropic is currently only releasing Claude Mythos 5 to a limited set of industry partners, many of which received access to Mythos Preview, and the company says it is collaborating with the US government on the rollout. Claude Fable 5, which is being publicly released, uses the same underlying model as Mythos 5, but will have "guardrails" in place at launch, the company said Tuesday, that will block the model from answering many user questions related to cybersecurity, biology, and chemistry.