No, Sako makes or made an AK variant starting in 1991. It WAS based on the Valmet though, that is what Janes says. "The Sako M90 is the successor to the Valmet M62/M76 series of Finnish service rifles, Sako having absorbed Valmet in the late 1980's." It goes on about the build and parts, then says "It is probably the best Kalashnikov clone ever made."
When it comes to Janes Defense, I kind of have to go by what they say. My dad was a weapons engineer during the "Star Wars Initiative" (and don't believe what they say about it being a sham --not all of it was). Anyway, Janes is what the weapons industry uses to catalog weapons and they are usually pretty good, they aren't your usual gun rag they are an industry journal.
And sorry, on the Bofors, it says it is an FNC variant (which I am also interested in, any advice here?). They are both very nice looking rifles that I'd like to try.
As far as AK's go, I'm not a big AK fan, I'm an AR guy. I would like a very nice AK though, I used to have an SLR95, but now that I've been exposed to this Sako, I really would prefer that. It certainly doesn't look like your average AK.