Walmart uses AI to review the quality of product listings posted by third-party sellers on its marketplace. The same AI that flags listings with problems — like misleading titles or policy violations — also suggests improvements to help sellers fix them. A third-party study found that AI-generated product reviews on Walmart grew sharply from 2019 to 2023 and then leveled off, which may indicate Walmart deployed detection tools, though Walmart has not confirmed this.

The Seller Center Success Hub includes a generative AI tool trained on Walmart's content standards that reviews submitted listings and suggests improvements to product names, descriptions, and key features. Listings that violate Walmart's content guidelines — such as those with keyword stuffing, promotional language, or prohibited claims — are flagged through a combination of machine learning, automation, and human review. Walmart has confirmed it uses this combined approach for intellectual property violations on the marketplace. Separately, an independent study by Originality.AI found AI-generated product reviews on Walmart grew approximately 81% between 2019 and 2023, then plateaued at about 7.8% in 2024. The study's authors speculate this plateau could reflect the introduction of AI detection tools, but Walmart has not publicly confirmed any specific system for detecting AI-generated reviews.