Video generation foundation model company Sand.ai completes $200 million Series A+ funding, cumulative funding reaches $300 million in 10 months

Sand.ai, a video-generation foundation model developer, closed a $200 million A+ round led by Cornerstone Capital and Wangsu Science & Technology, bringing its total funding to $300 million across three rounds in ten months. The company will use the proceeds for model R&D, training and inference infrastructure, product iteration, and global expansion, and plans to release the full version of its larger-parameter MoE video model MAGI-2 shortly. Its open-sourced MAGI-2 Preview has roughly 114 billion total parameters with about 6 billion activated per forward pass, and its distilled version generates a 10-second 1080P video at an inference cost of just 0.5 yuan; it ranked sixth globally on Artificial Analysis's image-to-video leaderboard at launch. Sand.ai's VidMuse product has surpassed $10 million in ARR within two months of launch. The round drew participation from Shandong state-owned investment vehicles and Shanghai state-backed institutions including Pudong Venture Capital and Shanghai Guofang, alongside existing investors Matrix Partners China, Huaye Tiancheng, and CAS Star. Next to watch is the MAGI-2 full release and whether VidMuse's early revenue traction holds as the company scales training infrastructure globally.