Studio OS is the agentic engineering design studio of Caseysimone Ballestas, a PhD student in mechanical engineering at UC Berkeley. Its practice is coherence engineering: the design of human-in-the-loop, auditable agentic workflows, attuned to the studio’s principal investigator (PI), that undergird any kind of project, from code to design to analysis to brainstorming. Studio OS defines how the work is done, not what the work is.