Key associates of Elon Musk testified in legal proceedings related to his ongoing dispute with OpenAI, according to court reports.

Jared Birchall, who serves as Musk's financial advisor, took the witness stand following Musk's own testimony. Birchall handles financial matters for Musk and serves in various operational roles within his business empire.

Separately, court documents revealed communications involving Shivon Zilis, a Neuralink executive who has four children with Musk. Messages presented at trial showed Zilis acting as an intermediary in communications between Musk and OpenAI during a period when the companies had business relationships.

The legal proceedings stem from Musk's dispute with OpenAI, the artificial intelligence company he co-founded in 2015 before departing its board in 2018. Musk has raised concerns about OpenAI's direction and governance structure in recent years.

The testimony from Musk's associates provides insight into the business relationships and communications between Musk's various ventures and OpenAI during their period of collaboration. The legal proceedings continue as both sides present evidence regarding their business dealings and agreements.