OpenAI gained between $65.5 billion and $109.4 billion from the billionaire entrepreneur's contributions when he was co-founding what was then a startup from 2015, while Microsoft gained between $13.3 billion and $25.1 billion, Musk said in the federal court filing ahead of his trial against the two companies.

The world’s richest person added $62 billion to his fortune after private investors more than doubled the valuation of his AI and social media firm to $250 billion.