No commercial service has 200 t/s prefill though. It is 1000s of pps for prefill. It is largely compute bound and very very fast on modern GPUs and model architectures. That is my point. It is an order of magnitude faster than decode, which is largely bound by memory bandwidth and just has a much harder limit. Prefill tends to look like a small slice in typical compute / token generation budgets. I am not saying it isn't important (I have been working hard on my own inference engine for flash next and am intimately familiar). I am saying it does not dominate. Also compaction and reading the whole prompt tends to be one of the few times you really hit peak pps because it is cached and you can just fill your data pipes for a bit. Also Deepseek showed you can make kv cache really cheap. Decode is still decode.