ChromaDB vs Pinecone In this article, we will compare ChromaDB and Pinecone, two popular vector databases used for vector storage and similarity search. We will explore their features, performance, use cases, and differences, to help you choose the right option for your specific needs. What is ChromaDB? ChromaDB is an open-source vectorized storage system designed for efficient similarity search and retrieval of large-scale high-dimensional data. It is built using C++ and provides a scalable solution for storing and querying vectors.