I’m aware (unfortunately) of the marketing claims and even if they might be true, as you say it is “for now”. So if it’s only temporary for that arm race, especially if held by a company who leaked its own code just days ago, then I have a hard time understanding why ‘zero-days are numbered’ because this title claims the dynamic itself is gone. That’s now my understanding, especially if other models are just marginally (which is hard to prove with models, finding proper metrics) worst than it.
Anthropic and OpenAI have multiple times used this arm race rhetoric before and it worked. Their models are supposedly “too dangerous” to be released thus consequently they have to control access.
It might be true but so far what we have witnessed is that roughly equivalent models get released by others merely weeks or maybe months after, sometimes open, but the “moat” never lasted long so I’m questioning why it would be different this time.
Mythos Preview is better at finding real vulnerabilities than existing public models and, for now, only a few have access to it.
I’m aware (unfortunately) of the marketing claims and even if they might be true, as you say it is “for now”. So if it’s only temporary for that arm race, especially if held by a company who leaked its own code just days ago, then I have a hard time understanding why ‘zero-days are numbered’ because this title claims the dynamic itself is gone. That’s now my understanding, especially if other models are just marginally (which is hard to prove with models, finding proper metrics) worst than it.
See comment that shared https://techcrunch.com/2026/04/21/unauthorized-group-has-gained-access-to-anthropics-exclusive-cyber-tool-mythos-report-claims just few hours ago, and that’s not even sophisticated.
Anthropic and OpenAI have multiple times used this arm race rhetoric before and it worked. Their models are supposedly “too dangerous” to be released thus consequently they have to control access.
It might be true but so far what we have witnessed is that roughly equivalent models get released by others merely weeks or maybe months after, sometimes open, but the “moat” never lasted long so I’m questioning why it would be different this time.
Actually untrue. The only thing mythos added was an automatic way to exploit vulns that other models also find. I read a good article on mastodon about it. I posted it elsewhere in the thread but also here https://www.flyingpenguin.com/the-boy-that-cried-mythos-verification-is-collapsing-trust-in-anthropic/
for now
https://techcrunch.com/2026/04/21/unauthorized-group-has-gained-access-to-anthropics-exclusive-cyber-tool-mythos-report-claims
That lasted long