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First reported by Hacker News
US Government Orders Anthropic to Suspend Fable 5 and Mythos 5 Access Under National Security Directive

US government forces Anthropic to pull two AI models over security concerns; debate erupts over motives

By

Theresa Loconsolo

1h ago· 1 min readenNews

Summary

The US government forced Anthropic to remove its two newest AI models (Fable 5 and Mythos 5) over national security concerns after Amazon researchers reportedly found a way to bypass Fable 5's guardrails. Cybersecurity researchers have signed an open letter calling the move dangerous, and Anthropic noted similar jailbreaks exist in other models. The TechCrunch Equity podcast discusses whether this is a genuine security concern or another chapter in Anthropic's tense relationship with the Trump administration, and what the ban means for developers and the company's IPO prospects.

Source

bskyUS government forces Anthropic to pull two AI models over security concerns; debate erupts over motivestechcrunch.com

Key quotes

· 3 pulled
Cybersecurity researchers have since signed an open letter calling the move dangerous
Anthropic itself noted the same jailbreaks exist in other models
Is this a genuine security concern, or just the latest chapter in a messy relationship between Anthropic and the Trump administration?
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Watch as Equity hosts unpack what the ban means for developers building on Anthropic's platform and for anyone watching the IPO and more of the week’s headlines.

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