Cassidy is building the first programmable platform for gene editing. We replace the narrow, trial-and-error design process with large-scale prediction, simulation, and in-silico validation—powered by LLMs trained on proprietary biological data. Our platform scales exploration, and ranks edits by efficacy and safety across multiple editors, cell types, and mutations–cutting timelines from years to weeks. By uniting the promise of gene editing with the power of LLMs, Cassidy delivers what matters most: better, safer therapies, in less time, for more people.