A new healthcare AI company called Ortet has launched with a $500 million commitment from Thoreau, a healthcare-focused investment platform. The founding team is composed of AI veterans from Genentech, Meta, Amazon Web Services, Spotify, Facebook, and Instagram — led by CEO Kyunghyun Cho, Ph.D., who co-developed foundational AI building blocks like the attention mechanism and Gated Recurrent Unit, key precursors to today's large language models.

Ortet's ambition goes beyond the narrow, task-specific AI tools that currently dominate healthcare. The company wants to build a full-stack platform — from compute and data infrastructure all the way to model deployment — anchored by a foundation model that learns across a patient's entire healthcare journey: biology, treatment, outcomes, and system interactions. The vision is a shared intelligence layer that can serve scientific discovery, clinical care, operations, and financial administration all at once.

By the Numbers:

• $500M — Thoreau's commitment to fund Ortet's infrastructure, model training, and research
• 5 — years CEO Cho spent building AI at Genentech after co-founding Prescient Design
• 3 — Genentech AI alumni among the co-founders

Why it matters: Most healthcare AI today solves one problem at a time. If Ortet delivers on its vision, it could represent a meaningful shift toward integrated, patient-centered AI — one that touches every layer of the health system simultaneously.