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#Claude Fable 5

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Anthropic NewsJul 6, 2026

Anthropic Details Claude Fable 5 Cyber Safeguards and Jailbreak Framework

Anthropic detailed the cybersecurity safety classifiers for its globally redeployed Claude Fable 5 model and released an early draft of an AI jailbreak severity framework developed with Glasswing partners. The company also launched a HackerOne program for researchers to submit potential cyber jailbreaks.

Anthropic NewsJul 2, 2026

Anthropic Redeploys Claude Fable 5 and Mythos 5 After U.S. Lifts Export Controls

Anthropic is restoring global access to Claude Fable 5 and U.S. access to Mythos 5 after the U.S. government lifted export controls imposed on June 12, 2026. The company also deployed an improved safety classifier to address a reported jailbreak technique.