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

How Anthropic decides which questions are too dangerous for Claude to answer.

Anthropic built Claude Fable 5 curbs to keep China's AI labs out. The fiercest backlash came from Western researchers, and the company has already blinked.

Restrictions on access to the powerful model, ‘targeted at Chinese AI labs’, are sparking debate about safety, innovation and open research.

Anthropic's Claude Fable 5 and Mythos 5 face Trump administration export controls after a jailbreak scare, cutting off all international users from both AI

AI giant Anthropic says it has taken its latest artificial intelligence models, known as Fable 5 and Mythos 5, offline to comply with a directive from the Trump administration to…

On June 9, 2026, Anthropic released Claude Fable 5, which was described as the most capable AI model...

An alleged jailbreak triggered a national security directive that forced the model to be pulled.

Enterprises can no longer afford — from an operational reliability standpoint — to run critical workflows on any single AI model or even provider.

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 disabled Claude Fable 5 and Mythos 5 after a US Commerce Department directive banned foreign nationals from accessing the models, marking a major

Anthropic’s Mythos Offensive: Between One-Shot Wonders, US Export Controls, and the Question of Who...

Anthropic pushed back against what it described as an overreach, saying the vulnerability cited is already widespread across the industry.

Anthropic's Fable 5 led every major AI benchmark over OpenAI's GPT 5.5 before a US export control directive forced it offline three days after launch.

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

The Trump administration imposed export controls on Anthropic's Fable 5 and Mythos 5 AI models, forcing the company to disable access for all users.

An “export control directive” for Anthropic’s Fable and Mythos models highlights the chaotic, fast-changing state of AI regulation.

Anthropic has been ordered by the US government to cut off its newest Claude Fable 5 and Mythos 5 models for fear of abuse