Derek Rosenzweig

Runtime Labs is an independent research and product company building time-grounded interfaces for language models. We believe time and event structure are foundational to reliable memory, planning, and recommendations.

Óra is a personal timeline for sharing experiences, connecting people, places, and moments over time.

Essays and notes on time-grounded systems, planning, and building Óra.

I studied government at Cornell, focusing on international relations, before moving into computational neuroscience and deep learning.

I worked in research labs at NYU and Stanford, studying neural recordings and representational alignment across biological and artificial neural networks during auditory and language processing.

Outside of work, I enjoy reading, traveling, and wandering city streets, library stacks, and record stores.