ChatGPT is owned by OpenAI, the organization that developed the AI. The OpenAI...

https://bizzmarkblog.com/why-microsoft-investment-value-is-not-the-same-as-governance-control/

ChatGPT is owned by OpenAI, the organization that developed the AI. The OpenAI Foundation oversees governance to ensure responsible management. While Microsoft is a major investor and partner, it does not own or control ChatGPT