U.S. Restores Access to Anthropic’s Claude Models Under New Restrictions
Summary
The administration lifted restrictions on Anthropic’s Claude Fable 5 and restored Mythos 5 access for select government-approved U.S. organizations. The restrictions followed concerns that researchers bypassed safeguards to find and potentially exploit software flaws.
Key points
- Anthropic said Claude Fable 5 is widely available again, while Mythos 5 is limited to select U.S. organizations approved by the federal government.
- The Commerce Department’s June 12 restrictions on foreign nationals led Anthropic to take both models offline for all users, the company said.
- Anthropic attributed government concerns to Amazon cybersecurity researchers finding a way to bypass Fable 5’s safeguards and discover software vulnerabilities that could potentially be exploited.
- Anthropic had previously warned that Mythos 5 could identify software flaws that malicious hackers might weaponize against critical computer networks.
- An executive order established a framework for federal review of advanced AI systems’ national security risks before public release, but the framework was not yet fully developed.
Article Details
- Event Type
- The U.S. government lifted restrictions on Anthropic’s Claude models and established limited access for selected models amid cybersecurity concerns.
- Impact
- Claude Fable 5 is again widely available, while Mythos 5 is limited to government-approved U.S.-based organizations. Anthropic said cybersecurity researchers at Amazon found a way to bypass Fable 5’s safeguards to discover and potentially exploit software vulnerabilities. Anthropic has warned that Mythos 5 can find software flaws that malicious hackers could weaponize; the article reports no specific exploitation incident.
People
Vendors
AmazonAnthropic 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.AnthropicThe 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.OpenAIAnthropic’s chief rival, ChatGPT maker OpenAI, also said Friday it is restricting the release of its new artificial intelligence model at the request of President Donald Trump’s administration.
Products
Claude Fable 5Anthropic said Tuesday night that its AI model called Claude Fable 5 is now widely available.GPT-5.6 SolOpenAI 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.Mythos 5It’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.
Countries
Industries
Artificial intelligenceThe 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.CybersecurityThe 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.