Anthropic restores Claude Fable 5 after 19-day shutdown triggered by Amazon jailbreak report
Anthropic's Claude Fable 5 was taken offline globally on June 12, 2025, after Amazon engineers flagged a jailbreak vulnerability to the U.S. Commerce Department. The model was restored 19 days later on July 1 following negotiations in Washington, the development of a new safety classifier, and the creation of an industry-wide jailbreak framework built collaboratively with Amazon, Microsoft, and Google. The article details the behind-the-scenes process of how Anthropic navigated the shutdown, the technical and policy solutions developed, and what this episode reveals about the company's position in the AI landscape in 2026.
Key quotes
The return of Claude Fable 5 to global availability on July 1 is the result of two weeks of Washington negotiations, a new safety classifier, and an industry jailbreak framework Anthropic built alongside Amazon, Microsoft, and Google.
On June 12, Amazon engineers handed a report to the U.S. Commerce Department. Within hours, two of Anthropic's newest AI models went offline for every user on the planet.
How Anthropic got from that shutdown to this resolution tells a specific story about where the company stands in 2026.
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