Fal.ai, a startup that hosts image, video, and audio AI models for developers, has closed a new round valuing the company at over $4 billion, four people familiar with the deal said. The company raised approximately $250 million, two of the people said. Major investors in the round are Kleiner Perkins and Sequoia, according to our sources. Fal didn’t respond to a request for comment. Sequoia and Kleiner Perkins declined to comment. The new round is coming less than three months after Fal announc...