Typically about three months. Coordinators can start grading on day one by pasting, uploading or recording notes while your IT team reviews the EHR or EDC connection, which is usually measured in weeks. The rest of the period is structured use on live work: graded visits timed against your manual baseline, blind grading on a sample to measure agreement between raters and with the AI, query volume for CRO and Phase 1 workflows, and attribution consistency for sponsors. The pilot closes with an outcome report on the measures agreed at the start, which is the evidence an enterprise decision rests on.