> I know artificial analysis quite well as the gold standard in llm evals.

I also know them, but it took me a while to realise you were publishing their data in that table. I don't think it was clear.

> The age is important because new techniques keep being developed and so it is a very rough indicator of the size/cost/efficiency trade-off.

Yes but you are already including the name of the model, your potential public for the table already know about model's release history and therefore each model's age, at least roughly.