FILE - Pages from the Anthropic website and the company's logo are displayed on a computer screen in New York, Feb. 26, 2026. (AP Photo/Patrick Sison, File)
President Donald Trump speaks before signing a presidential memo to the EPA on pollution control in vehicles, in the Oval Office of the White House, Monday, June 29, 2026, in Washington. (AP Photo/Jacquelyn Martin)
SAN FRANCISCO (AP) 鈥 The Trump administration has lifted restrictions on artificial intelligence company Anthropic's latest versions of its Claude chatbot, ending a weekslong ban tied to cybersecurity concerns.
Anthropic said Tuesday night that its AI model called Claude Fable 5 is now widely available. It's also restoring access to its most powerful model, Mythos 5, but only to a select group of U.S.-based organizations approved by the federal government.
The Commerce Department blocked foreign nationals from using both AI models on June 12, a move that San Francisco-based Anthropic said forced the company to immediately for all users just days after it unveiled them.
Anthropic said in a blog post this week that the government's concerns were sparked by a report from cybersecurity researchers at Amazon, Anthropic's primary cloud computing provider. The company 鈥渉ad found a method of bypassing Fable 5鈥檚 safeguards鈥 that enabled it to discover and potentially exploit software vulnerabilities, Anthropic said.
Officials have grown increasingly concerned since warned earlier this year that its Mythos model was adept at finding software flaws in a way that could be weaponized by malicious hackers and threaten critical computer networks around the world.
Anthropic's chief rival, ChatGPT maker , also said Friday it is restricting the release of its new artificial intelligence model at the request of President Donald Trump鈥檚 administration.
OpenAI said its new AI product, called GPT-5.6 Sol, would be accessible only to a select group of government-approved customers for a temporary period.
Trump last month signed on AI oversight that established a framework for the federal government to vet the national security risks of the most advanced for up to 30 days before their public release. The order described participation by AI developers as voluntary, but the framework has not yet been fully developed.
The Associated Press
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