Yes both the same model “GPT4TurboChat”, the only difference is on the WebUI, there is a hidden System prompt in front and they it also has set parameters, TopP, Temp and co which you are not able to change.
So the output is not exactly the same but close.
but the base model of GPT3.5 and 4 was never open for anyone outside of openAI.
there are other finetunes but not from 01.AI yet. Now you have more options