Centaur Labs accelerates AI development across the healthcare ecosystem by annotating medical and scientific data at scale. We offer a secure, HIPAA compliant annotation platform that supports annotation of multiple data types (e.g., text, 2D/3D imaging, video, audio, waveform, etc.), as well as annotation services from our network of 20K+ subject matter experts, who provide millions of annotations weekly. Our platform leverages competition and performance-based incentives to ensure annotator skill and motivation, and intelligently combines the opinions of multiple people to generate the highest quality annotations (as demonstrated in papers with researchers at e.g., Memorial Sloan Kettering and Mass General Brigham). We work with many of the world's most innovative medical AI companies (e.g., Paige.AI, Activ Surgical, Median Technologies), medical device manufacturers (e.g., Medtronic, Eko Health), NLP and LLM companies (e.g., Consensus), and life sciences companies (e.g., Volastra, multiple top 10 pharma companies).