Pgvectorscale is an open-source extension that enhances the performance of PostgreSQL for AI applications by incorporating specialized data structures and algorithms. It builds upon pgvector to enable large-scale, high-performance vector search and storage capabilities comparable or superior to dedicated vector databases like Pinecone. The extension offers cost-efficient scaling for vector workloads on PostgreSQL, making it a more viable option for developers aiming to create scalable AI applications. Pgvectorscale is licensed under the open-source PostgreSQL License and can be used in conjunction with pgvector to improve performance and storage efficiency.