OpenAI owns ChatGPT and handles its development. The OpenAI Foundation oversees...

https://angelossplendidperspectives.lowescouponn.com/does-microsoft-own-chatgpt-or-is-that-a-myth

OpenAI owns ChatGPT and handles its development. The OpenAI Foundation oversees governance, ensuring responsible use. Microsoft is a significant investor but does not own or control ChatGPT