Still Beta and still not 100%, although will there ever be such a thing as perfect AI ? I think it is not an easy thing to program and credit to the developers for having taken the effort to improve things.
I thought the AI in rf1 was not too bad although quality varies from mod to mod. In itself, rf1 was a pretty decent offline game...that is how I started in sim racing....offline and running against AI.
Putting things into perspective, I have ran in leagues and in competition against humans. Even there, you get a whole gamut of talents from the very accomplished to absolutely atrocious (crash happy weaving-prone drivers from Hell , worse than AI even...lol).
rf2 AI seems subjectively much better (at least to me) although I still get punted in the arse by belligerent AI more times than I care to comment. Try a standing start at Monaco in one of those 60s machines and you will see what I mean. They occasionally still have a tendency to punt you out of the way if you are somewhat slower negotiating a corner...or when you legally make a defensive block. But all in all, don't get me wrong. I'm not really complaining. I loved rf1 and rf2 Beta is heads and shoulders above in so many departments, it's hard to knock it. Besides, it's still Beta.
I will say one thing though. I never felt too much anxiety running Spa in rf1. For the most part, it's long, wide and none too scary and I don't get an extreme sense of speed unless i am doing 250+kph. It's no longer the case with rf2 Spa 1960. Heart in my throat most of the time. Those 60s cars are amazing to drive in 60s Spa, especially when the roads are shimmering wet with rain.