Elon Musk, who once fought in court for the right to call himself co-founder of Tesla, just disowned one of his most famous creations. 

The entrepreneur best known for running the carmaker alongside Twitter and SpaceX in grueling 120-hour work weeks is notable for another feat that receives less attention: helping launch the company behind ChatGPT.

The revolutionary A.I. chatbot, first revealed on Nov. 30 by parent OpenAI, has sparked a fierce social debate over artificial intelligence thanks to the remarkable ability of ChatGPTs neural network to mimic human thought.

Yet after Microsofts latest multi-billion dollar investment in OpenAI last month, Musk is now distancing himself from the company. 

The serial CEO said it no longer resembled anything like what he had once co-founded in December 2015. According to Musk, it was designed to be an open source non-profit, which was the very reason why it was dubbed OpenAI.

Now it has become a closed source, maximum-profit company effectively controlled by Microsoft, he posted to Twitter. Not what I intended at all.

According to its website, OpenAI has been organized since March 2019 as hybrid with a non-profit foundation that governs the limited partnership company and has ultimate control over intellectual property. This allows it to raise investment capital and attract employees with startup-like equity. 

At this point, though, Musk has little means to affect change in his own creation apart from taking to the bully pulpit. 

By his own admission, Musk no longer owns a stake in OpenAI. He is neither on the board, nor does he control it in any way. (Musk did however have a relationship with OpenAI director Shivon Zilis, with whom he recently fathered twins.)

OpenAI did not immediately respond to a request from Fortune for comment, but its charter says the company is committed to ensuring its work in A.I. benefits all of humanity.

Risks from AI akin to harnessing the power of the atom 

Musk has said he co-founded OpenAI in the hopes it would serve as a counterweight to Google. At the time he felt the tech giant was not concerned enough about the risks that came with the technology.

On Wednesday, Musk subsequently renewed his call for a regulatory agency to provide oversight of A.I. in the spirit of the National Highway Transportation Safety Administration over vehicle safety or the Federal Aviation Administration over airplane safety.

It is, I think, actually a bigger risk to society than cars or planes or medicine. And this may slow down A.I. a little bit, but I think that might also be a good thing, he told the World Government Summit in Dubai.

Musk urged policymakers not to repeat the mistakes of the past by first waiting until a tragedy strikes before acting. 

What are the biggest risks to the future of civilization? AI is both a positive and a negative: it has great promise and great capability, but with that also comes great danger, he said. With the discovery of nuclear physics, you had nuclear power generation, but also nuclear bombs.

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