[sgjohnson]

I’d argue that with explosives it’s significantly above zero.

But with bioweapons, yeah, that should be a solid zero. The ones actually doing it off an AI prompt aren't going to have access to a BSL-3 lab (or more importantly, probably know nothing about cross-contamination), and just about everyone who has access to a BSL-3 lab, should already have all the theoretical knowledge they would need for it.