No idea. Better to ask the people training models what they use internally, not me. A good benchmark itself could be worth millions.

LMSys has the same energy as Amazon reviews of brand name products. It's measuring something, and that something might be valuable. I don't know if it is valuable for answering subjective, spicy questions like, "What LLM is likely to replace most or all of your job right now, giving you some time to arbitrage 1h of chatbot with a full time employment?" which is what everyone actually cares about. That is what this is all about. I can't tell you what benchmark is answering that question or others. I don't know!