Taco Bell Has 890 AI Drive-Thrus. Most Customers Have No Idea.

Kristen Charpentier pulled up to a Dairy Queen drive-thru this spring and started placing her order. The voice on the other end was friendly, patient, and a little too perfect: no background noise, no static, no sigh at the complicated request. Halfway through the meal deal, she asked the worker at the window who she had been talking to. The worker told her it was an AI.

"It was a little unsettling," Charpentier told WIRED. Most customers would have asked the same question only after they had already paid.

Taco Bell announced in July that it has rolled voice AI out to 890 drive-thru lanes, more than 10% of its US locations, in a single push powered by the vendor Omilia. That is the first major US chain past the scale-up threshold. It is not the only one crossing it. Dairy Queen is rolling out voice AI in 25 states, with the rest of its footprint planned. White Castle says an AI named Julia now takes orders at roughly 12% of its locations and that every new store opens with Julia on the lane.

Intouch Insight's annual Drive Thru Survey, the trade's most-watched benchmark, put voice-AI adoption in US fast-food drive-thrus at about 4% in 2024 and 5% last year. Early research for 2026 suggests 6%, a doubling in two years, on a base that started near zero. Sarah Beckett, a vice president at the firm, framed the moment for WIRED as the chains that have been testing for three years now "ready to go" and ready "to start scaling this massively."

The pattern across the chains is not uniform, and the failures are as informative as the wins. McDonald's has zig-zagged through five years of consumer-facing AI: it bought the voice-AI startup Apprete in 2019, partnered with IBM in 2021 to build McD Tech Labs, ended the IBM drive-thru test in June 2024 after viral customer clips showed the system getting simple orders wrong, and as of June 2026 is testing a new AI system at five locations. Del Taco, a smaller competitor, has gone the other way: it ended its use of drive-thru voicebots entirely.

The difference is the headset. Inside most QSRs, an order-taker still wears a headset, listens to the customer through a speaker post, and types the items into the register. Voice AI replaces that worker, at least for the order itself. The labor is not gone. The worker is still at the window, handing over the bag. But the human on the other end of the speaker is increasingly a server running a vendor model. That is the structural shift the WIRED feature is naming: the technology that learned to write code is now learning to take your order, and the rollout is happening on the lane, not in a press release.

The next chapter is no longer whether the technology works. It is who can deploy it at chain speed. The chains that did three years of testing, Taco Bell, Dairy Queen, and White Castle, are at scale. The largest chain in the category is still on attempt two. The smaller chain that tried it walked away. The 6% number is the floor, not the ceiling, and the customers who have not asked who is taking their order are the ones the new lane is being built around.