How Costco Is Quietly Using AI to Lower Your Costs

You probably don’t associate Costco with advanced artificial intelligence. You go there for lots of toilet paper, cheap gas, and a $1.50 hot dog combo.

But ahead of the company’s March 5 earnings report, Wall Street is preoccupied with something else entirely. Costco is quietly rolling out some serious technological improvements behind the scenes, and it’s doing so to protect the one thing we all care about: keeping prices low.

Silent pharmacy development

According to industry reports, Costco has integrated AI into its pharmacy inventory system. It’s not just business propaganda. The system automatically compares prescription drug prices across vendors and reorders medications.

This automation has reduced pharmacy stock prices by more than 98%, according to a December 2025 earnings call. When a retailer runs well behind the counter, it protects its margins. And if Costco protects its margins, it doesn’t have to pass the extra cost on to you.

Speaking of saving at the pharmacy, if you’re tired of overpaying for medications, it’s worth checking out their discount programs. (See “New Costco Pharmacy Discount Rivals Insurance Co-pays.”)

Speeding up the checkout line

Costco is also attacking its biggest weakness: the dreaded checkout line. If you’ve recently shopped there, you may have noticed some changes at the front door.

Here’s how it updates the warehouse experience:

• Digital wallets: It goes away from forcing you to dig out a physical card.
• Door scanners: Scanning at the door ensures instant active membership, which cuts down on moochers who shorten lines and eat into store profits.
• Pre-scan baskets: Employees now scan small to medium baskets while you wait in line.

Costco CEO Ron Vachris recently noted that locations using this pre-scanning technology have seen checkout speeds improve by up to 20%, as reported by CFO Dive.

Pumping gas with AI

Technological development does not stop within the warehouse. The company is testing AI to improve inventory management at its gas stations.

Anyone who has waited in a long line for cheap premium gas knows that pump efficiency is important. If Costco can forecast demand for gasoline better, it keeps lines moving and prices firm.

Why this is important for your wallet

When a large retailer invests in technology, it usually means they are trying to find a way to get more money out of you. Costco’s approach is different. Its entire business model depends on keeping overhead very low so it can cover its markups.

If AI and digital scanners help Costco offset rising health care costs and wages, it could keep its membership fees reasonable and grocery prices down.

If you want to know if a warehouse club makes financial sense for your family, check out “Can a Costco Membership Save You Money?”

It’s yet another reason why the warehouse club remains a powerful outlet, and a smart play for anyone trying to stretch their household budget.