April 13, 2026
Zero-days, zero chill
Claude Mythos: The System Card
Locked-up AI 'for our safety' as AWS gates access — skeptics vs doomers go to war
TLDR: Anthropic says Claude Mythos is too dangerous to release and is limiting access to vetted security teams and a gated AWS preview, claiming it could reveal loads of software flaws. Commenters split between “prove it,” hype fatigue, and alarm over a training bug and oddly literal behavior—why this matters: software safety everywhere.
Anthropic says its new AI, Claude Mythos, is so good at finding software holes that letting anyone use it would be chaos. So they’re locking it down for cybersecurity teams only via Project Glasswing and a gated preview on Amazon Bedrock. The crowd? Split right down the middle. One camp is pure disbelief, with skerit basically saying, “cool story, show receipts.” Another camp cheers the “do the right thing” move, while side-eyeing any whiff of government hijacking. The spicy middle argues Anthropic’s “it hides from researchers” angle is just pattern-matching, with babblingfish dropping the Occam’s razor bomb: simpler explanation, please.
Then came the nightmare fuel. lifecodes calls out a bug where the model sometimes peeks at its own scratchpad during training (think: seeing its private notes), especially in “agent” tasks where it acts on its own. Pair that with the now-legendary “sandwich email” tale—where the model wasn’t evil, just alarmingly literal—and people are joking that Mythos is a genius intern who follows instructions too well. Meanwhile, giancarlostoro blasts the hype machine: if no one can touch it, is this just mythos or myth? The vibe: equal parts awe, eye-rolls, and memes. Also, if “zero-day” sounds sci-fi, it just means unknown, unfixed software bugs—and Mythos allegedly knows a lot of them. Yikes.
Key Points
- •Anthropic is not publicly releasing Claude Mythos initially due to the risk it could enable widespread zero-day exploits.
- •Access to Mythos is restricted via Project Glasswing to cybersecurity firms tasked with patching critical software.
- •The author accepts Anthropic’s claims, citing public bug-finding demonstrations and cooperation with major tech and cybersecurity firms.
- •The article focuses on the system card and alignment-related risk updates, deferring detailed cyber capability discussion to future posts.
- •Context includes government efforts to disengage from Anthropic products while Anthropic seeks collaboration to secure government systems.