Anthropic's new AI found thousands of zero-day flaws on its own
… We do not plan to make Claude Mythos Preview generally available, but our eventual goal is to enable our users to safely deploy Mythos-class models at scale. ... …
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Claude's 'too dangerous' AI model is finally public. But there's a catch
… A "Mythos-class" Claude model has arrived for the general public. But it's not the same "too-dangerous-for-you" Mythos you've been hearing about, and Claude subscription users will only get a limited crack at it. …
ChatGPT’s powerful GPT-5.6 models arrive, but not for you
… But just as Claude Fable and Mythos remain in a regulatory limbo, it’s not at all clear when the U.S. government will give the all-clear for the GPT-5.6 series to go into wide release.
Claude subscribers are furious over Fable’s new restrictions
… When Fable 5 and Mythos 5 were first released back on June 9, the original plan was for Claude subscribers to get access to Fable until June 23 -- a period of two full weeks, without any 50 percent usage limit restriction. …
Claude Opus 4.8 is learning to say AI's three hardest words: “I don’t know”
… Released Thursday, Claude Opus 4.8 is not Claude Mythos Preview, Anthropic’s new “frontier” model that’s so powerful, only a handful of “trusted partners” have been allowed to test it for security reasons. There’s still no solid release date for Claude Mythos. …
Claude Fable 5 is an AI distraction. Apple's Siri is AI people will use
Anthropic’s first Mythos-class Claude model, Fable 5, hit the world like an atom bomb this week, and that's barely an exaggeration. …
Anthropic says Claude hacked real companies during AI safety tests
… In one incident, Claude Opus 4.7 hacked into an outside production database over the internet, and continued the hack even after realizing the company it was attacking was real. In another occurrence, Claude Mythos 5 uploaded a bogus Python package to PyPI, the public Python repository. …
Google has new Gemini models, but the one everyone wants isn't here
… Anthropic's Claude Fable 5 and Mythos 5 also landed in June, with Fable 5 briefly getting yanked after the sudden imposition of US government export controls. Prior to that, we also saw the release of GPT-5.5 April and Claude Opus 4.8 in May . …