New York-based Alterra Labs has secured $12.5 million in a seed funding round. The investment was led by Oak HC/FT, with additional participation from Flare Capital Partners and Company Ventures.

The startup develops simulated clinical environments designed to test and train AI models. The platform allows models to perform medical tasks, identify failures, and use those errors as training data for improvement.

The process incorporates human expertise, as doctors and scientists design tasks and evaluate model decisions. These simulations cover various healthcare domains, including patient care, medical imaging, electronic health records, and clinical trials.

Alterra Labs serves a diverse client base, including health systems, pharmaceutical companies, biotech firms, and government organizations. The company plans to use the new capital to scale its evaluation and training platform.

Additionally, Alterra Labs has joined the Responsible AI Institute. As part of this membership, the firm participates in the TrustX Health working group, which focuses on testing agentic AI technologies that perform autonomous actions in medical workflows.