An 80% “time horizon” of 1 hour would mean that an AI has an overall success rate of 80% on a variety of selected tasks that would take a human AI researcher 1 hour to complete, presumably taking much less time than the humans (although I couldn’t find this statement explicitly).
Figure 13 describes the ratio of AI cost to human cost, which is close to what you’re after. (Though if you care about serial time in particular, that could differ quite a bit from cost.)
Figure 13 describes the ratio of AI cost to human cost, which is close to what you’re after. (Though if you care about serial time in particular, that could differ quite a bit from cost.)