AFP has contacted both companies for their reaction to the filing.

OpenAI captured the public imagination in late 2022 with the release of its chatbot ChatGPT, which can generate passable poems and essays and even succeed in exams.

The firm has also developed image and video generating tools that are seen as the leaders in their field.


The success of its products has helped attract huge investment into AI, which boosters say could transform every aspect of human life.

Microsoft, a major investor in OpenAI since 2019, poured billions more into the firm last year.

And the software giant stepped in when OpenAI’s board fired CEO Sam Altman in November last year, hiring him and offering to house any staff members who were unhappy with his ousting.

The OpenAI board later climbed down, Altman was reinstated and several board members were replaced.


OpenAI started life as a non-profit dedicated to developing “artificial general intelligence”, a vague term loosely defined as a kind of AI that would far outstrip human capabilities on all measures of intelligence.

The idea was for OpenAI to guarantee that such technology would be safe for humanity.

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But Musk’s legal case said this founding principle had been “turned on its head”, accusing OpenAI of continuing in secrecy “towards a profit-centric future with possible calamitous implications for humanity”.

The changes to OpenAI in 2023 were “a stark betrayal of the Founding Agreement, turning that Agreement on its head and perverting OpenAI Inc’s mission”, the filing stated.

The document pointed out that OpenAI still claimed to be pursuing AGI that “benefits all of humanity”.


“In reality, however, OpenAI Inc has been transformed into a closed-source de facto subsidiary of the largest technology company in the world: Microsoft.”

Musk is asking the court for compensation, to force OpenAI’s leaders to make their research open to the public and ban them — or Microsoft — from making a profit from the technology.

Since leaving OpenAI, Musk has joined the chorus of critics warning that superintelligence could spell the end for humanity.

He also launched his own AI firm, xAI, last year and said he wanted to raise $1 billion from investors.