Keep people indispensable as intelligence gets cheap.

Coembark is an applied research lab. We build durable systems at the application layer, turning frontier models into tools that expand human agency rather than quietly removing it — one lab, several frontiers, held to a single standard of rigour.

What we believe

Technology should grow what people can do.

Collaboration, not replacement
The best systems make a person better at their work, not redundant in it. We measure success by what people can do with our tools, not without them.
Agency by design
People should stay in command of the decisions that matter. We build for understanding, oversight, and the ability to say no.
The application layer is the work
Frontier models are raw capability. The hard, human part is putting them to work safely in real contexts — and that is where we focus.

Team

The people building it.

  • Portrait of Lily Geidelberg

    Lily Geidelberg

    Founder & CEO

    Lily was a portfolio manager in global equities at a Tier 1 hedge fund. She holds a PhD in computational biology covering modelling, machine learning, and statistics, and served on the boards of two biotech companies.

  • Portrait of Aeron Laffere

    Aeron Laffere

    Chief Technology Officer

    Aeron studied computational neuroscience, bioinformatics, and machine learning. He left his DPhil to become the first employee of Psyrin, a forward-deployed AI startup in US behavioural health, and went on to co-found Coembark with Lily.