Elon Musk’s xAI has lost its second co-founder in two days.

Influential researcher Jimmy Ba announced his departure on Tuesday postal On X, he thanked Musk, writing, “Thanks for helping co-found it from the beginning.”

Ba’s departure comes just one day after another co-founder, Tony Wu, left. Announce He quit xAI himself, merge It partnered with Musk’s aerospace company SpaceX earlier this month. When xAI co-founder leaves, SpaceX is preparing public Sometime this year.

Ba, a professor at the University of Toronto, is credited with key research that influenced version 4 of the company’s Grok artificial intelligence model. In addition to Ba and Wu, other co-founders include Igor BabushkinKyle Kosic and Christian Szegedy also left Musk’s artificial intelligence efforts. Greg Young It was announced last month that he would step down from his position to focus on his fight against Lyme disease.

According to statistics, this record-breaking all-stock transaction valued SpaceX at US$1 trillion and xAI at US$250 billion. Documents viewed Reported by CNBC. Musk previously used xAI to acquire his social network X (formerly Twitter) in another all-stock deal announced in 2019. March 2025.

xAI is also facing a wave of resignations regulatory probe Located in multiple jurisdictions across Europe, Asia and the United States

The investigation was conducted at the company Gronk Artificial Intelligence Chatbots and image generators allow for the mass creation and aggregation of non-consensual explicit images, commonly known as deepfake porn. The images are based on photos of real people, including children.

Musk and 11 others launch xAI in 2023 to try to compete with rivals open artificial intelligence and Google. The company’s stated goal was to “understand the true nature of the universe,” according to its website at the time.

The company did not immediately respond to a request for comment.

watch: Baillie Gifford Tim Garrat says SpaceX’s xAI deal ‘addresses key bottlenecks in artificial intelligence’