The artificial intelligence rush has enabled some small startups to grow very big very quickly. But by some estimates, none have grown as fast as Anysphere Inc., maker of the popular AI coding assistant Cursor, which has surpassed $500 million in annualized revenue, the company said. Now, the three-year-old startup has raised $900 million to help drive that growth, Anysphere plans to announce on Thursday. That will bring its valuation to $9.9 billion, including the new capital, underscoring inve...