Halluminate

Halluminate is a San Francisco startup (Y Combinator S25) building realistic, resettable sandboxes and high-quality datasets to train and evaluate computer- and browser-use AI agents. Its flagship project, Westworld, is a fully simulated internet of synthetic consumer and enterprise apps where agents practice economically valuable tasks - booking flights, financial modeling, reorganizing data - against programmatic verifiers that produce reinforcement-learning reward signals. Customers include foundation-model labs and browser-agent companies.