The Department of Health and Human Services, through the National Institutes of Health's Advanced Research Projects Agency for Health (ARPA-H), is hosting a Proposers’ Day for the Rare disease AI/ML for Precision Integrated Diagnostics (RAPID) Program. This event, scheduled for January 23, 2025, in San Francisco and virtually, aims to inform potential proposers about the program's objectives, timelines, and the upcoming Innovative Solutions Opening (ISO), focusing on the development of AI and machine learning diagnostic tools for rare diseases. The RAPID initiative emphasizes the integration of fragmented health data to improve diagnostic capabilities, particularly for underserved populations, and spans a total duration of 4.5 years across two phases. Interested parties can reach out to the RAPID Email Box at RAPID@ARPA-H.gov for further information.