ChatGPT is owned by OpenAI, with the OpenAI Foundation overseeing its...

https://dallasssplendidinsight.yousher.com/what-should-i-look-for-in-an-openai-s-1-about-microsoft-amazon-softbank-and-nvidia

ChatGPT is owned by OpenAI, with the OpenAI Foundation overseeing its governance as of early 2024. Microsoft is a significant investor supporting its development but does not own or control ChatGPT