A man used AI to call 3,000 Irish bartenders to track the cost of Guinness. Now pubs are lowering their prices to compete

A 37-year-old Irish man used AI voice technology and Claude to call 3,000 bartenders nationwide, gathering real-time Guinness prices across Ireland. This innovative price-tracking created an informal consumer index, revealing significant regional pricing variations. The resulting transparency prompted pubs to lower prices competitively, demonstrating how AI can drive market efficiency and consumer benefits through data collection and analysis.