The U.S. Commerce Department ordered Anthropic to shut down Fable 5 and Mythos 5 worldwide over a reported jailbreak. Here's the breakdown.

Technology export rules have historically applied to transfer of source code, but with genAI, agentic and other SaaS deployments, that no longer works. Experts ask, what does?

Anthropic leaders flew to Washington, DC, to meet with White House officials on Monday. After high-level talks, they’re still split on the risk Claude Fable 5 presents.

Blacksmithing is going to be a slog in Fable, and that's just how we like it.

Anthropic launched Claude Fable 5 with safeguards, mandatory data retention, and limited government scrutiny compared.

Fable 5 was built to help with advanced cybersecurity work. Its sudden shutdown highlights a dilemma at the heart of AI security: the same tools can aid both defenders and attackers

Why Anthropic suddenly pulled Fable 5 and Mythos 5 for everyone

Here's how Anthropic and OpenAI's most powerful AI models stack up.

The government believes it has become aware of a method of bypassing, or ‘jailbreaking’ Fable 5,” the company said in a blog post.

Released in April, GPT-5.5 Pro is the latest model powering ChatGPT. It’s available via OpenAI’s Pro plan (which costs $200/month), and also on the company’s Business ($30/user/month) and Enterprise (custom pricing) tiers.

The U.S. government is barring foreign nationals from using Anthropic's latest AI models. As a result, Anthropic has disabled them for everyone.

Anthropic said its blocked frontier AI models could be available again within days as it expands in Korea despite U.S. security restrictions.