What is the relationship between Elon Musk and OpenAI, and how are they competing?

Elon Musk was one of the original founders of OpenAI alongside Sam Altman, but left the company in 2018. Since then, he has created competing AI products, including his latest chatbot Grok3, to rival OpenAI's offerings like ChatGPT. The competition between them has intensified significantly in the US tech landscape. Musk has made two major moves against OpenAI: offering a substantial $97 billion bid to acquire the company, while simultaneously suing OpenAI for transitioning from a nonprofit to a for-profit business model - a change he believes contradicts the organization's original intent. Both companies are now vying for influence over AI regulation and building relationships with the incoming Trump administration.