Scale AI

Scale AI is a data infrastructure company providing labeled training data, RLHF, and evaluation for machine learning and large language models, combining software with a large managed human workforce. In 2025, Meta took a roughly 49% stake for about $14.3 billion, reshaping Scale's client base and strategic position while it continues serving enterprise and government customers.

Scale AI is one of the largest providers of data infrastructure for artificial intelligence. Its core business is producing high-quality labeled training data and human feedback for machine learning models, including annotation for computer vision, autonomous vehicles, and, increasingly, reinforcement learning from human feedback (RLHF) and evaluation for large language models. Scale operates as a vertically integrated platform combining software with a large managed human workforce, and it also offers products for enterprises and government. In June 2025, Meta invested roughly $14.3 billion for a stake reported at around 49%, valuing Scale at over $29 billion. As part of the deal, founder and CEO Alexandr Wang moved to Meta to work on its AI efforts while remaining on Scale's board, and Scale appointed an interim CEO to run the company, which it stated would remain independent. The transaction was a defining event for the data-labeling industry. A notable consequence is that major AI labs that compete with Meta reportedly reduced or ended their reliance on Scale following the deal, prompting Scale to lower revenue expectations and pushing some customers toward alternative providers. Scale continues to serve enterprise and government customers and remains a significant player, but its competitive landscape and neutrality perception shifted materially after Meta's investment. Pricing is enterprise and typically per-task or contract-based rather than public list pricing.