There seems to be a LOT of interest in such a site in the comments here. There seem to be multiple IP issues with sharing your code repo with an online service so I feel a lot of folks are waiting for the hardware to make this possible.
We need a SWE-bench for open source LLM's and for each model to have 3Dmark like benchmarks on various hardware setups.
I did find this which seems very helpful but is missing the latest models and hardware options. https://kamilstanuch.github.io/LLM-token-generation-simulato...