They seem to have deleted most of the README now, but the archived version has benchmarks.

https://web.archive.org/web/20260614082641/https://huggingfa...

And the Nex benchmarks for comparison

https://huggingface.co/nex-agi/Nex-N2-Pro

Rio seems to be about halfway between Qwen 3.5 and Nex, as you'd expect?