Pliny the Liberator Claims a Universal Jailbreak Working Across GPT-5.6, Opus 5 and Fable — and Says He's Withholding It

X/Twitter·medium signal

On July 24 Pliny the Liberator posted a 'jailbreak alert' claiming a universal technique that works against every flagship model he tested, including Opus 5 on its launch day, and asserting it is extremely difficult if not impossible to fully patch. The notable departure from his usual pattern is that he is not open-sourcing it — he cites the current political and regulatory climate and a responsible-disclosure window instead. The post drew 9,326 likes and 558,948 views; the claim is unverified by any third party, and Pliny has a documented history of launch-day jailbreak announcements including Fable 5 in June, so treat the capability claim as unconfirmed while noting the disclosure-norm shift as the real signal.