Pinecone

// about Pinecone

Pinecone is the most widely used managed vector database, providing the long-term memory infrastructure for AI applications. When building a RAG (retrieval-augmented generation) system, embeddings are stored in Pinecone and retrieved by semantic similarity at query time — giving LLMs access to private knowledge without fine-tuning. Its serverless tier makes it free to start, while its managed service scales to billions of vectors for enterprise applications. Pinecone is a foundational component in the majority of production AI applications built in 2024–2025.