Alterra Labs Raises $12.5M Seed

Alterra Labs, a New York based startup building simulated environments to test and train medical AI models, has announced a $12.5 million seed round. The company focuses on evaluating AI models on clinical tasks to identify errors and improve performance through reinforcement learning.

Investors

The funding round was led by Oak HC/FT, with participation from Flare Capital Partners and Company Ventures.

Alterra Labs Use of Funds

Alterra Labs plans to use the capital to further build out its simulated medical environments and expand its capacity to provide training and post-training services to frontier AI labs and healthcare providers.

About Alterra Labs

Founded in 2025 by Akash Kapoor, Alterra Labs develops simulated clinical environments where AI agents can practice medical decision-making. The company leverages clinical feedback to help AI models improve their judgment, safety, and performance in high-stakes healthcare scenarios such as imaging, clinical trials, and telehealth.

Funding Details

Company Website: https://alterralabs.com

Company: Alterra Labs
Raised: $12.5M
Round: Seed
Funding Date: November 10, 2026
Lead Investor: Oak HC/FT
Additional Investors: Flare Capital Partners, Company Ventures
Software Category: Healthcare AI
Source: https://fortune.com/2026/11/10/alterra-labs-12-5-million-seed-round-training-environments-medical-ai/