What happened
After early failures, fast-food chains are rolling out AI voice ordering at scale. Taco Bell has deployed it at 890 US locations (over 10 percent of its chain), Dairy Queen is expanding across 25 states, and White Castle has equipped 12 percent of its locations with an AI named "Julia." McDonald's resumed testing AI ordering this summer with Google at five locations. According to Intouch Insight's annual survey, roughly 6 percent of US fast-food locations now use voice AI in the drive-thru, up from 5 percent last year and 4 percent in 2024.
Why it matters
The technology failed spectacularly in 2023—viral TikToks showed McDonald's AI adding 260 Chicken McNuggets to orders and bacon to ice cream. Early AI agents were less friendly and less accurate than humans, and chains had to station employees ready to intervene. But the technology has improved enough that major chains are now betting on it as a core competitive tool. Intouch Insight found AI drive-thrus average 21 seconds faster than industry standard. More significantly, AI upsells 71 percent of the time versus a 58 percent industry average for humans—meaning the real payoff is margin expansion, not labor replacement.
What to watch
McDonald's is testing the technology at five US locations in partnership with Google, with support for English and Spanish. Dairy Queen plans eventual rollout to all restaurants. Employment data so far shows no job losses—White Castle's headcount remained steady through the rollout, and Taco Bell reported higher employee retention at locations using voice AI. However, customer sentiment remains mixed: while Intouch Insight reported 97 percent satisfaction, some customers express unease about losing human connection.
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Fast-food chains' pivot to AI drive-thru ordering represents a second wave of adoption after a failed first attempt. McDonald's kicked off the trend in 2019 with its acquisition of Apprete and the creation of McD Tech Labs, but the pandemic-era expansion exposed critical flaws: the technology struggled with accents, dialects, and the cascading logic of a complex order. By 2023, public ridicule on social media and internal friction—Branded Hospitality even sold off its early investments—forced a retreat. What has changed is incremental but meaningful: the underlying AI models have improved in comprehension and context-handling, and chains have shifted strategy from pursuing perfection to accepting that humans can intervene when needed. White Castle's Jamie Richardson explicitly frames the approach as "incremental improvement rather than waiting for an infallible AI agent," and the data backs it—Intouch Insight reports AI drive-thrus now beat the industry average by 21 seconds.
The economic logic driving the renewal is upselling rather than labor displacement. Intouch Insight's finding that AI agents use suggestive selling 71 percent of the time compared to an industry average of 58 percent reveals what chains actually see as the payoff: margin expansion through add-on purchases without triggering customer backlash. This also explains why Chick-fil-A, Dutch Bros, and 7Brew—brands with reputations for superior hospitality—have explicitly eschewed the technology. These chains recognize that human connection is their differentiator; for them, AI would trade brand equity for modest upselling gains. Meanwhile, chains like Taco Bell and Dairy Queen are banking that speed, consistency, and aggressive upselling will outweigh customer concerns about losing the human element. The 97 percent satisfaction rate suggests most customers are willing to accept the trade-off.
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