ArchAI is de-risking construction by using deep learning to automatically detect archaeology using earth observation data and historic maps. Construction projects have a big impact on their environment and is legally required to assess potential damages before planning permission is granted. ArchAI's instant desk-based solution significantly reduces time (currently around 6-24 months) and cost (currently 2-5% of overall construction value) of archaeological assessments. ArchAI uses LiDAR to extract earthwork remains, satellite imagery to detect crop stress revealing sub-soil walls and ditches, and historic maps to assess historic locations of e.g. woodland, ponds and hedges.