Court papers were filed at a California court on Friday and cited an expert valuation of what Musk was entitled to. In his lawsuit, Musk makes the allegation that OpenAI — which he co-founded in 2015 — has abandoned its original purpose as a non-profit organization committed to ensuring that artificial intelligence research benefited humanity. Musk argues that the company now mainly serves the interests of Microsoft. What Musks legal team argues Financial ‌economist C. Paul Wazzan was the expert consulted by the South African billionaire's legal team. He said Musk fronted up $38 million in early financing for OpenAI and also provided key industry contacts and expertise. Based on those contributions, Wazzan says Musk is entitled to a share of OpenAI's current value, estimated at between $65.5 billion and $109.43 billion. Musk is also seeking between $13.3 billion and $25.06 billion from OpenAI's largest partner and investor, Microsoft. "Just as an early investor in a startup company may realize gains many orders of magnitude greater than the investor's initial investment, the wrongful gains that OpenAI Microsoft have earned — and which Mr. Musk is now entitled to disgorge — are much larger than Mr. Musk's initial contributions," Musk's lawyer Steven Molo wrote. Elon Musk to become history's first trillionaire? To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video How has OpenAI responded OpenAI said Musk’s latest legal bid is just another attempt to revive the same claims and is part of a broader pattern of harassment aimed at delaying OpenAI’s work.