Fable 5 and Mythos 5 Jailbreak and Government Response
2 videos · score: 16,794 · first seen Jun 15, 2026
🔴 BREAKINGThe jailbreak of Fable 5 and Mythos 5 has sparked controversy as Fireship claims the U.S. government removed them over national security concerns, while Matthew Berman argues they are not uniquely dangerous compared to models like GPT 5.5 — the story is gaining attention due to the clash between AI safety fears and the ease of bypassing AI guardrails.
One man just liberated Fable... and now it’s illegal
Anthropic's Fable 5 and Mythos 5 were removed by the US government after a jailbreak by 'Plenty the Liberator' exposed model vulnerabilities, with the creator attributing the action to national security concerns.
Mythos BANNED (explained)
Ply the Prompter successfully jailbroke Mythos Fable 5 shortly after its release, challenging the company's claims of enhanced safety and drawing comparisons to the vulnerability of models like GPT 5.5.