Semantic Search

AI-powered search that understands meaning, not just keywords

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How It Works

Embeddings

Text is converted into high-dimensional vectors (1,536 dimensions) that capture semantic meaning. These vectors enable semantic retrieval — the retrieval layer used in Retrieval-Augmented Generation (RAG) systems.

Vector Similarity

When you search, your query is also converted to a vector. We find documents with the highest cosine similarity—meaning the closest conceptual match.

No Keywords Needed

Traditional search requires exact word matches. Semantic search understands that "ancient trickster" relates to "fox spirit" even without shared words.

Architecture

Your Query OpenAI Embeddings Vector Comparison Ranked Results
Python FastAPI OpenAI API text-embedding-3-small NumPy Railway