Exa

A neural search engine designed to provide LLMs and developers with clean, crawled web data via semantic embedding.

Exa (formerly Metaphor) replaces traditional keyword matching with a transformer-based inference model that understands the actual meaning of a query. By indexing billions of pages and filtering for high-quality content, the API allows systems to retrieve specific documents—like research papers, GitHub repos, or news articles—using natural language prompts. It bypasses SEO spam by focusing on link structures and content relevance, delivering structured results that are ready for RAG (Retrieval-Augmented Generation) pipelines.

https://exa.ai