- The US government has lifted an export ban on Anthropic's most advanced artificial intelligence (AI) tools, just weeks after ordering it to restrict access to them over national security concerns, the company has said.
- Anthropic said in a statement that it will begin restoring access to Claude Fable 5 and Mythos 5 on Wednesday after being notified that the US Department of Commerce has lifted restrictions on the two models.
- The Commerce Department said in a letter that Anthropic has addressed the risks associated with the models.
- Commerce Secretary Howard Lutnick wrote in a letter that Anthropic has agreed to proactively detect and address security risks associated with the models.
- The Commerce Department reserves the right to reconsider its decision to lift export restrictions if necessary.
- Mythos and Fable are two of Anthropic's AI models built on its Claude platform - a rival to the likes of OpenAI's ChatGPT and Google's Gemini.
- Fable 5 is a version of the AI model for the consumer market, capable of deep reasoning and can perform complex tasks independently.
- Mythos 5 is designed for businesses and cybersecurity experts, and is said to be able to identify vulnerabilities in computer code and exploit them.
- Both models were released on 9 June.
- Anthropic stated that the government believed it had become aware of a method of bypassing, or 'jailbreaking' Fable 5, which refers to slipping past software safety restrictions.
The U.S. Department of Commerce has lifted the export ban on Anthropic's AI models, Claude Fable 5 and Mythos 5, following the company's commitment to address security risks.1246789
Commerce Secretary Howard Lutnick noted that Anthropic will proactively detect and address potential security threats associated with the models.
Fable 5, aimed at consumers, and Mythos 5, designed for businesses, were initially restricted due to concerns over a potential 'jailbreak' method that could bypass safety features.
Anthropic disagreed with the government's assessment, arguing that the narrow potential for a jailbreak should not warrant a recall of a widely used commercial model.

The company plans to restore access to both models starting Wednesday, with Fable 5 available globally on the Claude platform and Mythos 5 being gradually rolled out to U.S. organizations.
The Commerce Department retains the right to reassess the decision if necessary, emphasizing the importance of security in AI development.35
Anthropic's collaboration with the government aims to ensure that appropriate safeguards are in place for trusted partners accessing these advanced AI tools.
“The US government has lifted an export ban on Anthropic's AI tools, allowing access to Claude Fable 5 and Mythos 5. This decision follows Anthropic's agreement to address security risks and collaborate with the government.”

