Hi, we have this if you take a look at the models page (https://artificialanalysis.ai/models) and scroll down to 'Latency', and also on the API host comparison pages for each model (e.g. https://artificialanalysis.ai/models/llama-2-chat-70b)
Your latency numbers for OpenAI (and Azure's equivalents) seem really high, I run time to first token tests and I see much better numbers!
(Also are those numbers average, p50, p99, etc? I'd honestly expect a box plot to really see what is going on!)