Amazon S3 Vectors now supports metadata pre-filtering for higher recall on filtered searches

Today, we’re announcing metadata pre-filtering for Amazon S3 Vectors , which delivers higher recall on filtered queries by evaluating your metadata filter before the similarity search. You can filter on attributes such as tenant, category, status, or time, and pre-filtering adds prefix matching with $startsWith for paths, URLs, and hierarchical keys. Each vector carries up to 2 KB of filterable metadata, and a single query supports up to 100 filter constraints.