I spent a few hours digging into Anthropic's Mythos Preview disclosure and the BleepingComputer report that Mythos-class models are coming to all customers "in the coming weeks." The headline numbers are wild. The conclusion is boring. Let me explain.
TL;DR
Mythos beats Opus 4.6 by ~90x on offensive security benchmarks (181 Firefox exploits vs 2 in matched tests).
Opus 4.8 already matches Mythos on alignment scores — that's how Anthropic justified the public rollout.
Mythos will likely cost $25/$125 per million tokens (vs $5/$25 for Opus 4.8). 5x premium.
