Scale AI has raised an extraordinary $15.9B across major rounds, highlighted by a $14.3B Series G in June 2025 led by Meta, and a $1B Series F in 2024 featuring Accel, Y Combinator, Thrive Capital, Nvidia, Tiger Global, and others. Earlier, Scale raised $325M in Series E (2021) from Dragoneer and Wellington. Founded in 2016, the company provides data infrastructure and model evaluation tools for training generative AI and enterprise AI systems. Its massive capital base enables expansion into synthetic data, model fine-tuning, and advanced safety and alignment workflows.