Tech billionaire Elon Musk-led xAI has raised a staggering $6 billion in its Series B funding round, launching it into the company of older and bigger AI startups like Microsoft Corp.-backed OpenAI, and Anthropic, among others. What Happened: xAI’s $6 billion fundraising, pegging its reported valuation at $24 billion, makes Musk’s AI startup among the most valuable ones in the world overnight. However, despite this massive funding round, led by some big names like Sequoia, Andreessen Horowitz, and Saudi Prince Alwaleed Bin Talal, among others, xAI is still not the largest AI startup in the wor…