NEW YORK (AP) — Walmart is diving into voice-activated shopping. But unlike online leader Amazon, it's not doing it alone.

The world's largest retailer said Wednesday it's working with Google to offer hundreds of thousands of items from laundry detergent to Legos for voice shopping through Google Assistant. The capability will be available in late September.

It's Google's biggest retail partnership — and the most personalized shopping experience it offers — as it tries to broaden the reach of its voice-activated assistant Home speaker. And it underscores Walmart's drive to compete in an area dominated by Amazon's Alexa-powered Echo device.

"Voice shopping is becoming a more important part of everyday shopping behavior," said Marc Lore, CEO of Walmart's U.S. e-commerce business.

The voice-activated devices are becoming more mainstream as they become more accessible. Even Apple has one coming out this year. Walmart has said Google's investment in natural language processing and artificial intelligence will help make voice-activated shopping more popular.

And Lore said the personalization of the partnership means people can shout out generic items like milk, bread and cheese, and Google Assistant will know exactly the brands and the size that the user wants.

Google introduced shopping to Home in February, letting people use voice to order essentials from more than 40 retailers like Target and Costco under its Google Express program. But that was far behind the Echo, available since late 2014.

Walmart, which has more stores than any other retailer and the largest share of the U.S. grocery market, is also working hard to close the gulf online between itself and Amazon.

It has overhauled its shipping strategy and is expanding store-curb pickup for groceries ordered online. But it's also had to look beyond itself and form partnerships. Walmart announced Monday that it's expanding its grocery delivery service with ride-hailing service Uber, and it's been testing same-day delivery service with Deliv at Sam's Club in Miami.

Amazon generally has been building its network of services on its own, using its $99-a-year Prime membership with same-day and even one-hour shipping options to develop loyalty.

It's also been drawing in customers with its Alexa devices. Amazon doesn't give sales figures for Echo, but Consumer Intelligence Research Partners estimated that it's sold more than 10 million Echo devices in the U.S. since late 2014. That includes the core $179 Echo as well as the less expensive and smaller Echo Dot and the portable Amazon Tap.

To be more competitive with Amazon, Google Express is scrapping the $95-a-year membership starting Wednesday, allowing shoppers to get free delivery within one to three days on orders as long as the purchase is above each store's minimum.

Walmart is integrating its Easy Reorder feature — which has data on both store and online purchases — into Google Express. Shoppers who want to reorder their favorites have to link their Walmart account to Google Express.

With other Google Express retailers, personalization takes time as the assistant learns shoppers' preferences, says Brian Elliott, general manager of Google Express. So the quick personalization with Walmart should make voice-activated shopping more attractive, he says.

While one of Walmart's biggest advantages over Amazon is its massive number of stores, Amazon's nearly $14 billion offer for Whole Foods could shake up the landscape. Whole Foods shareholders voted Wednesday to approve the Amazon bid.

Walmart says it will be tapping its 4,700 U.S. stores and its fulfillment network next year to offer more kinds of customer experiences using voice shopping. For example, shoppers can tell Google Assistant they want to pick up an order in a store. Lore said the company wants to make voice shopping as easy as possible, and "that's why it makes sense for us to team up with Google."

Internet analyst Sucharita Mulpuru-Kodali praised the partnership, but believes voice-ordering is still in its nascent stages and not likely to drive a lot of business in the short term.

"I like that Walmart and Google are partnering," she said. "That is the sort of complementary relationship that Walmart needs to have any hope in winning in online retail." She believes relatively few people have even tried voice ordering for e-commerce, though, and beyond being early it's "quite an imperfect experience at that."

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