Clustering billions of products for agentic commerce with Catalog API (2026) - Shopify

What this post added

This post details the application of LLMs and ANN retrieval for intra-store product clustering, focusing on a 'core value proposition' framework to distinguish product variants from distinct products. It also outlines a two-stage LLM pipeline with pre-chunking to handle large catalogs and a singleton detector to optimize the process by identifying deterministically clustered products.