Labelbox, the AI platform powering reinforcement learning for frontier models and managed agents for enterprises, today announced it has raised more than $100 million in Series E financing, including equity and a credit facility. The round was led by Infinitum Partners, with participation from Wipro Ventures, Andreessen Horowitz (a16z), B Capital, Tau Ventures, Snowpoint Ventures, and others.

Labelbox provides the data, reinforcement learning infrastructure, and managed agent platform that help AI systems learn and perform real work. Its products support frontier AI labs developing more capable models and enterprises deploying AI agents across their operations. Labelbox serves more than 400 customers, including leading AI labs, hyperscalers, startups, and Fortune 500 companies.