Arena.ai released carbon tests 12 days ago - the only service that I have seen on yt that gained access. And you can compare to other SOTA models in their video.

https://www.youtube.com/watch?v=NO2I3ueVQrk

And they have one on fable 5.2 that was just released, yay

https://www.youtube.com/watch?v=QwaU4yU0PdQ