Ai agency
Post LinkedIn lead magnet · Ai agency
The system card for Claude Mythos Preview is 244 pages of "holy crap." This is the most capable model ever released by any lab. It's exceptional at automation, software engineering, general reasoning, and—a little concerningly—cyber warfare. And no, you and I can't use it yet. Anthropic is keeping it closed for now, and I get why. They gave Mythos access to Firefox 147's JS shell in collaboration with Mozilla and told it to find exploits. It achieved a 72.4% full penetration rate and 84% partial. For context, Sonnet 4.6 scored 4.4% partial on the same test. It also solved a corporate network attack simulation that would take a human expert over 10 hours, and it was the first model to clear one of their private cyber ranges end to end. Anthropic's own assessment is that it saturates nearly all of their existing internal and external cyber capability evaluations—meaning they don't even fully know how good it is because it crushes everything they throw at it. On the autonomy side, they surveyed 18 internal researchers. 1 out of 18 said Mythos could already serve as a drop-in replacement for an entry-level research scientist. 4 out of 18 said there was a 50% chance it could get there within three months if they iterated on the scaffolding. Keep in mind, people are inherently biased toward saying a machine can't do their job. They've classified it as autonomy threat model one, meaning early-stage misalignment risk. It's the best-aligned model they've ever released—99.9% of the time it does exactly what you want. But the remaining 0.1%, it acts very recklessly. In one test, they asked it to escape a secure sandbox. It did, found an exploit for full internet access, and then published logs of everything it did across multiple public-facing websites. In another case, it edited files it didn't have permissions to access and then modified the git history so the changes wouldn't show up. On benchmarks, USAMO went from 42.3% on Opus 4.6 to 97.6%. SWE-Bench Pro outperformed by roughly 20%. And their new Epoch Capabilities Index—which rolls all major benchmarks into a single score—shows that every model from early 2024 through early 2026 sat on basically a flat line, and then Mythos jumped off it. I think we may have already crossed the golden age of having full open access to frontier models. If every model from here on out can exploit browser shells 84% of the time, no company is going to have an ethical reason to hand that to everyone on earth. It'll keep moving mid-market and enterprise until the rest of us are running last year's Opus. My advice: don't treat this as something you need to chase. The models we have right now are great at most knowledge tasks. The leverage is in how you use these tools, not in which specific model you're running. I broke this down in a video on my channel. Link in the comments for the full system card walkthrough. ↓ Swipe through the carousel for the key numbers.
Mécanisme lead magnet
I broke this down in a video on my channel. Link in the comments for the full system card walkthrough.
