Fal.ai, a startup focused on providing infrastructure for multimodal AI models, has raised approximately $250 million in a new funding round, elevating its valuation to over $4 billion. This funding comes shortly after a $125 million Series C round, indicating significant growth for the company, which reported revenues exceeding $95 million and a user base of over two million developers. The demand for multimodal AI, particularly in video applications, has surged, as seen with the popularity of OpenAI's Sora. Fal.ai offers a comprehensive suite of over 600 models across various media types and provides flexible access options for developers. Its customer base includes notable companies like Adobe and Shopify, showcasing its appeal across different sectors. The startup was co-founded by Burkay Gur and Gorkem Yurtseven, who aimed to optimize multimedia generation in a market increasingly focused on AI technologies.