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@MatthewJBar

Some people are being way too alarmist about Mythos. 80,000 Hours called Mythos "an AI that can break into almost any computer on Earth". Zvi Mowshowitz said, "If given to anyone with a credit card, Claude Mythos would give attackers a cornucopia of zero-day exploits for essentially all the software on Earth". But these descriptions are unfounded. @natalia__coelho shows in her latest blog post that the cyber capabilities of Mythos are nearly tied with GPT-5.5, across practically every public benchmark we have available. This includes both narrow and broad cyber evaluations. It is not way ahead of trend. The same holds for general capability evaluations. Except for a somewhat impressive score on SWE-bench Pro, Claude Mythos is nearly on-trend, at most a few months ahead. In other words, it's barely better than models that millions of people already have access to. It's an impressive model, but I'm very skeptical that Mythos is going to take down our digital infrastructure or cause a cyber catastrophe.

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