Pinecone is the leading managed vector database that powers AI applications requiring fast, accurate semantic search and similarity matching at massive scale. It stores and indexes vector embeddings from any AI model, enabling sub-100ms queries across billions of vectors — making it the infrastructure backbone for production RAG applications, recommendation systems, and semantic search. AI engineering teams at companies including Shopify, Notion, and Zapier choose Pinecone for its combination of performance at scale, simplicity of a fully managed cloud service, and the reliability needed for customer-facing production AI applications.