What Happened
McDonald's piloted IBM-built automated voice ordering at more than 100 US drive-thrus starting in 2021. Customers documented persistent recognition failures, including bacon added to ice cream, hundreds of dollars of unwanted chicken nuggets, and orders padded with ketchup and butter, and the clips went viral on TikTok. In June 2024 McDonald's told franchisees to shut the system off at all test locations by July 26, 2024, ending the IBM partnership on automated order taking.
Impact
A three-year, 100-plus-restaurant technology program was scrapped, IBM lost its flagship AOT customer, and the viral failures became a widely cited cautionary tale for voice AI in customer-facing operations.
How to Prevent This
- Set quantitative order-accuracy thresholds that gate expansion of voice AI pilots
- Test extensively against real-world acoustics: traffic noise, accents, cross-talk, and menu slang
- Add confidence-based fallback that hands ambiguous orders to a human immediately
- Cap order quantities and flag anomalous items to prevent absurd or costly mistakes
- Monitor social media for failure clusters as an early-warning signal during pilots