Derek Rosenzweig

Founder, Runtime Labs

Building Óra

derek@ora.app

About

My work is grounded in two convictions: event structure improves the reliability of model outputs, and time is a foundational primitive for memory, planning, and action.

I'm interested in memory interfaces and human-computer interaction: tools that preserve context over time for planning and reflection.

Runtime Labs

Runtime Labs is an independent research and product company focused on time-grounded language model interfaces. We develop systems that anchor language models in time, location, and events so natural language stays grounded in real-world context.

Óra

Óra is built as a planning environment where models operate on persistent, time-structured state. Plans are preserved as timestamped events anchored in time and location, with relevant notes, photos, and links attached to each event.

Schedule with natural language and images. Óra interprets intent, proposes events for preview and approval, and updates your timeline once you commit them.

Background

I did not anticipate starting a company. My work began with an interest in how brains process auditory signals and translate sensory information into natural language understanding. In time, I gravitated toward designing interfaces for time-based human-computer interaction, stumbling from early research prototypes toward what became Óra.

Current Work

Planning interfacesNatural-language planning across timelines, calendars, and notes
Time-indexed memoryPreserving model interactions in relation to past and future events
Human-agent collaborationShared surfaces where people and models can plan, revise, and commit actions
Mobile and voice timelineiOS and web interfaces for persistent event context

Contact