What just happened? Elon Musk has dropped his lawsuit against OpenAI and its CEO Sam Altman without giving a reason why. The billionaire launched the suit in February this year, claiming the pair breached their original contractual agreements by putting profit ahead of developing AI that benefits humanity.

After Musk sued OpenAI and Altman, the ChatGPT maker responded to the suit with a public post, authored by founding members, that included several of Musk's old emails. The post portrayed Musk as a jealous hypocrite who wanted absolute control over OpenAI. He also suggested that OpenAI use Tesla as a "cash cow."

Musk was one of the co-founders, backers, and initial board members of OpenAI, departing the company in 2018 over what he said was a conflict of interest with Tesla.

The case seemed to be going in Musk's favor. In May, the California judge presiding over the case removed himself following a challenge from Musk's lawyers. His legal team cited a law that allows a judge to be removed if it is believed they cannot grant an impartial trial.

Musk filed to voluntarily dismiss his breach of contract claims at a San Francisco court on Tuesday. The filing did not list a reason for the dismissal. However, a hearing regarding OpenAI and Altman's motion to dismiss the case had been scheduled for today, notes CNN.

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OpenAI had called Musk's lawsuit "incoherent" and "frivolous," denying that there was any kind of "founding agreement."

Much of Musk's case revolved around the claim that OpenAI has developed an artificial general intelligence, or AGI, which refers to a machine with intelligence and reasoning that can match or outsmart humans, and handed it to Microsoft. Classifying GPT-4 as an AGI is something many experts have called into question.

It certainly isn't as if Musk's feelings towards OpenAI and Altman have suddenly changed. Following Apple's announcement at WWDC this week that it will be integrating ChatGPT into Siri as an optional feature requiring user permission, Musk warned that he would ban Apple devices from his companies if "Apple integrates OpenAI at the OS level." He added that visitors to his firms would have to check their Apple devices at the door, where they will be stored in a Faraday cage.