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Elon Musk and Sam Altman cofounded OpenAI, but now they're locked in a legal battle. Here's the history of their working relationship and feud.

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Elon Musk and Sam Altman cofounded OpenAI , but now they're locked in a legal battle.

Musk sued OpenAI and Altman , accusing them of betraying the firm's founding principles.

Musk then filed a lawsuit against OpenAI in August and amended it to include Microsoft .

Musk has taken shots at OpenAI on several occasions since leaving the company.

Altman has addressed some of Elon Musk's gripes about OpenAI .

Elon Musk sued OpenAI , Altman , and cofounder Greg Brockman in March 2024 .

Musk has since briefly unfollowed Altman on Twitter before following him again.

Altman: "Most of that is not true, and I think Elon knows that," he said last year .

Musk filed a motion asking a judge to prevent OpenAI from dropping its nonprofit status.

The billionaire called OpenAI 's partnership with Microsoft a "de facto merger" The two companies "possess a nearly 70% share of the generative AI market," Musk 's lawyers said.

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