Semantic Search vs Keyword Search for Ecommerce: What Actually Drives Revenue [2026]

By 2026, the debate has shifted from traditional keyword search versus semantic search to a more nuanced comparison between AI-layered and AI-native search architectures in ecommerce. While most ecommerce platforms have integrated some form of AI to enhance search capabilities, many still rely on generic models that lack a deep understanding of specific product attributes and shopper behavior, often leading to revenue shortfalls. AI-native search, exemplified by platforms like Marqo, is emerging as a superior alternative due to its purpose-built models that comprehend both textual and visual product attributes, enabling immediate recognition of new products and nuanced shopper intent. This architecture not only improves relevance and reduces zero-result rates but also boosts conversion rates, revenue per session, and average order value by aligning search results with both shopper preferences and business priorities. As retailers pivot towards AI-native solutions, they witness significant gains, especially in handling long-tail, descriptive, and conceptual queries, highlighting the limitations of AI-layered approaches that depend heavily on pre-existing behavioral data.