Customers who use Walmart’s AI-powered shopping assistant are placing orders roughly 35% larger than those who do not, CEO John Furner said during the company’s fourth-quarter earnings call.

The assistant, called Sparky, is embedded in the Walmart mobile app under an “Ask Sparky” button marked by a smiley face. The tool helps shoppers locate products, summarize reviews, and plan for events or occasions, such as checking sports schedules or weather conditions tied to upcoming plans. Walmart also introduced a merchant-focused AI assistant, Wally, earlier this year.

“I love how Sparky perfectly fits within our omnichannel strategy; it connects digital intent to fulfillment through forward-deployed inventory and 1.5 million associates here in the U.S.,” Furner said. “When Sparky builds a basket, we execute it through fast delivery, pickup, or in-store, turning AI engagement into immediate physical outcomes.”

About half of Walmart’s app users have tried Sparky, according to Walmart U.S. President and CEO David Guggina, who was recently promoted from chief e-commerce officer.

“Sparky is essentially helping us evolve from traditional search to intent-driven commerce,” Guggina said during the call. He added that enhancements in personalization and contextual understanding are driving improved discovery and higher conversion rates. “From an economic standpoint, better discovery and higher conversion translates into bigger baskets and greater frequency. … Sparky is helping customers find the things they need, they want, and they love, and it’s strengthening our digital unit economics as it scales.”

Sparky is currently available only in the United States, though Furner said the company intends to expand the tool internationally over time.