Anthropic cuts access to Fable 5 and Mythos 5

On Friday evening, the government told Anthropic to block access to both Fable 5 and Mythos 5 models for all foreign users — inside and outside the US. The order even reached Anthropic's own employees. The company has now cut off the models for everyone.

What's missing is the 'why.' Anthropic says the government didn't spell out its national security concern. Evidence of potential jailbreaks was shared verbally, not in writing. The vulnerabilities they found were minor, and you can work around them with other models.

"They didn't say why," Anthropic told the Verge. "They just said no."

Why this matters for us: when a government order can shut down access to the tools we're building with without saying why, la gente are left guessing.