I doubt, because OpenAI would figure that out and cut their access at will (and wrapping the API in this particular way by claiming it's another model is agains

I doubt, because OpenAI would figure that out and cut their access at will (and wrapping the API in this particular way by claiming it's another model is against their ToS). Also, despite it's clearly modeled after GPT, it also often does things GPT wouldn't say. In particular, it can get very repetitive, repeating itself over and over when asked to clarify a question, which curiously is also what Bing's model does. Bing is powered by multiple models, an early version of GPT-4 currently to be replaced with GPT-4 Turbo, and another model Microsoft made... which is the repetitive one. It seems part of OpenAI's secret sauce is to avoid the model getting stuck in loops, which naive efforts like xAI's and Microsoft have not independently resolved.