I don't remember where I saw it, but I remember a claim that Azure hosted models performed poorer than those hosted by openAI.

Explains why the enterprise copilot ChatGPT wrapper that they shoehorn into every piece of office365 performs worse than a badly configured local LLM.

They most definitely do. They have been lobotomized in some way to be ultra corporate friendly. I can only use their M365 Copilot at work and it's absolute dogshit at writing code more than maybe 100 lines. It can barely write correct PowerShell. Luckily, I really only need it for quick and dirty short PS scripts.