Fable 5
2 published articles
AIFeatured3 min read
Export control directive
The U.S. just made Anthropic shut off its best models over a jailbreak it doesn't believe exists
The U.S. government ordered Anthropic to suspend Fable 5 and Mythos 5 access over a potential jailbreak. Anthropic complies but disputes the basis, saying the vulnerabilities are narrow, known, and present in other models. The company is working to restore service.
2026-07-10
AIFeatured6 min read
AI Safety
Anthropic's jailbreak severity scale is a proposal that could reshape ai safety regulation
Anthropic proposes a four-axis scoring system for AI jailbreak severity, from 'informational' to 'critical,' and details the classifiers that block dangerous cybersecurity uses of Fable 5. The framework, developed with Glasswing partners, aims to standardize how the industry and regulators talk about model misuse.
2026-07-08