ToplineThe Trump administration has lifted its restrictions on Anthropic’s most advanced AI models, the company announced late on Tuesday, noting that it will start restoring access to its users and business customers globally starting Wednesday.Anthropic said it will begin restoring access to Claude Fable and Mythos to customers starting Wednesday.NurPhoto via Getty ImagesKey FactsIn a post on X, Anthropic said it was informed that the Department of Commerce lifted export controls on Claude Fable 5 and Mythos 5.The move comes two and a half weeks after the government abruptly banned the company from allowing foreign nationals—including Anthropic employees who are not U.S. citizens—from accessing its newest models, citing national security concerns.Secretary of Commerce Howard Lutnick tweeted that the government had “worked closely” with Anthropic over the past two weeks to “analyze and approve Fable 5” and “strengthen America’s leadership in AI.”A letter from Lutnick to Anthropic, cited by multiple outlets, noted that the company had coordinated with the government to “proactively detect and address security risks” associated with the two models.The company has also worked to inform the government if it detects any malicious activities involving the models.Lutnick’s letter warns that the Trump administration reserves the right to reimpose restrictions in the future if “circumstances change or should Anthropic fail to adhere to its commitments.”Crucial QuoteIn a post on X, White House Chief of Staff Susie Wiles wrote: “My gratitude to companies across industries who continue to work closely with the White House to implement the President’s EO: ‘Promoting Advanced AI Innovation and Security.’ This includes excellent work around advanced model access and guardrail testing and security…Our shared priority remains: get the best tech deployed as quickly and safely as possible.”What Do We Know About Claude Fable and Mythos?Last month, Anthropic released Claude Fable 5—a public version of its advanced Mythos model with additional safeguards. In the lead-up to Fable’s launch, Anthorpic touted Mythos as a highly sophisticated model that could cause major cybersecurity disruptions and be used to find and exploit previously unknown vulnerabilities in the digital infrastructure. The model was initially offered to top tech companies, governments, and financial institutions. While launching Fable, Anthropic called it a “Mythos-class model” but noted that it had restrictions in place when dealing with queries related to cybersecurity, biology and chemistry.What Led To The Export Curb on Mythos and Fable?Days after Fable’s public launch, the White House imposed export controls on both Mythos and Fable, citing national security concerns. Anthropic said that as a result of the order, it had to “abruptly disable Fable 5 and Mythos 5 for all our customers.” The AI company said it believed the government’s decision was in response to a “method of bypassing, or ‘jailbreaking’ Fable 5.” The company, however, downplayed the “jailbreak” demonstration, saying the technique was used to “identify a small number of previously known, minor vulnerabilities,” rather than to carry out a sophisticated cyber breach.further readingAnthropic Meeting With Trump Admin As Claude Mythos Tensions Reach Fever Pitch (Forbes)OpenAI Rolls Out Powerful New GPT-5.6 Models—But Limits Users After Government Request (Forbes)