Case studies / northrail
Northrail — claims copilot
6d→4h
adjudication time
60k docs indexed98.2% precision10 weeks
Problem
Claims adjudicators searched five disconnected systems by hand; average time-to-decision was six days for anything outside the simplest cases.
Intervention
Retrieval over 60,000 policy and claims documents, an eval harness scoring adjudication drafts against historical outcomes, and a human-in-the-loop review step for every recommendation.
Outcome
Adjudication time fell from six days to four hours at 98.2% precision on the eval set, with every recommendation traceable to its source documents.
6d→4hadjudication time
98.2%precision on eval set
60kdocuments indexed
planner topology
throughput / depot
60k
documents indexed
"Deploys landed every second Friday like clockwork. No surprises at the invoice."
NGNorthrail GroupHead of Engineering
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