Elon Musk’s AI startup xAI raised $5 billion in a funding round, valuing the company at $50 billion.This brings xAI's total funding for the year to $11 billion and more than doubles its valuation from $24 billion to $50 billion.The funds will be used to add 100,000 Nvidia chips for training AI models.Menlo Ventures predicts that enterprise spending on generative AI will increase from $2.3 billion in 2023 to $13.8 billion in 2024.