Yeah, but now you do have a year to ramp up security on the defensive side, which is not nothing.

I still don't think this is the best way to address overall safety, but it's not entirely unreasonable.

In reality, I think this posturing is mostly nonsense. State level actors and terrorists/evil genii can use a slightly weaker model but spend more tokens. Also, the delta between models seems to shrink over time.

I think you're very optimistic with the "a few years", I'm confident all of the parties building AI models are working on Mythos equivalents / competitors, and if they can undercut Anthropic by making it more widely available and / or affordable they will. I give it three months tops. In a year all the major players will have an equivalent. In three years it'll be widely available, as more and more AI focused datacenters go online.