Elon Musk's artificial intelligence company xAI has reportedly lost its final co-founder, according to multiple reports this week. The departure leaves only two of the original 11 co-founders who helped launch the AI startup.

The exodus of leadership at xAI comes as the company faces intensifying competition in the artificial intelligence sector. All but two of the founding team members had already departed the company before this latest exit, raising questions about internal dynamics and the company's direction.

Meanwhile, Physical Intelligence, an AI robotics startup, is reportedly in discussions to raise approximately $1 billion in new funding. The potential deal would effectively double the company's valuation to around $11.2 billion, up from its previous $5.6 billion valuation achieved just four months ago.

The rapid valuation increase at Physical Intelligence reflects continued investor enthusiasm for artificial intelligence companies, particularly those focused on robotics applications. The funding talks demonstrate how quickly valuations can shift in the competitive AI landscape.

Both developments highlight the volatile nature of the AI industry, where companies can experience rapid growth in valuations while simultaneously facing leadership challenges and competitive pressures.