OpenAI owns ChatGPT and oversees its development, with governance managed by...

https://www.bookmark-url.win/curious-about-who-owns-chatgpt-as-of-2024-openai-owns-and-operates-chatgpt

OpenAI owns ChatGPT and oversees its development, with governance managed by the OpenAI Foundation. While Microsoft is a significant investor, it does not own or control ChatGPT