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

fortune.com Mar 31, 2026

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

Curated by Shubham · TechCapsules · Mar 31, 2026

AI-summarised brief · reviewed before publication

A man used AI to call 3,000 Irish bartenders to track Guinness prices, finding an average of €6.01. The "Guinndex" allows bartenders and drinkers to contribute and modify prices. This initiative has prompted pubs to lower their prices to compete, with the most common price now €5.50. The AI agent, Rachel, made thousands of calls, conversing with bartenders who often didn't realize they were talking to a machine, leading to more transparent pricing.

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