From Consumer Reports:
"By Toyota’s estimates, the Prius should be EPA-rated at 57 mpg combined. The new Prius Prime should get at least
a 50 percent longer all-electric range. The EPA estimates that the current Prius gets 22 miles per charge before it transitions to regular hybrid operation." (emphasis mine
I take that to mean 22 * 50% + 22 = 11 + 22 = 33 miles.
That's a might disappointing. But it is what it is.
No mention of passive v. active management of battery temperature.
The article is here:
2023 Toyota Prius and Prius Prime Preview - Consumer Reports