What is Theo?

Built by FirstPrinciples, Theo is a persistent, human-steered research workspace for scientific research. It helps researchers plan, execute, verify, and share work while keeping scientific judgment and final decisions with the researcher.

Theo coordinates frontier and specialized models, literature, scientific tools, solvers, simulations, and independent verification. Because research is non-linear, you can start anywhere, use our specialized tools to uncover promising research paths, or solve targeted scientific problems.

Context, assumptions, evidence, code, data, decisions, checks, provenance, and artifacts remain connected in a living, shareable research state - turning a sequence of chats into a reproducible research record that compounds over time.