Musk fires back at OpenAI attorney

Watch on YouTube ↗  |  April 30, 2026 at 16:21  |  2:11  |  CNBC

Summary

CNBC's Kate Rooney reports from the Oakland courthouse on the fourth day of the Elon Musk vs. OpenAI trial. Musk is being cross-examined by OpenAI's lawyers, with heated exchanges over the nonprofit's shift to for-profit and Microsoft's investment. The trial centers on Musk's claim that OpenAI executives cannot keep nonprofit protections while profiting.

  • Elon Musk is on the witness stand for the fourth day of his lawsuit against OpenAI.
  • Musk and OpenAI's lawyers have had fiery exchanges during cross-examination.
  • Musk argues OpenAI cannot retain nonprofit goodwill while reaping for-profit benefits.
  • Musk called his $38 million donation to OpenAI a 'foolish' act.
  • Microsoft's $10 billion investment in OpenAI is a key point in the case.
  • The defense argues Musk tried to control OpenAI and was aware of its direction.
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