Exa
AI search API for semantic web search, content retrieval, and grounding AI agents with real-world data.
Features
- Semantic and neural search API
- Search, Crawl, Answer, and Research endpoints
- Sub-200ms Exa Instant for real-time apps
- Domain and category filters
- Zero data retention and SOC 2 certified
- MCP server for AI integrations
What is Exa? Exa (formerly Metaphor) is an AI search API designed to power agents and applications with high-quality web search. It provides semantic search, content crawling, natural language answers, and in-depth research with structured output. Exa is used by Notion, Cursor, OpenRouter, and others to ground AI in real-world data. The API offers a free tier and enterprise plans with custom data retention and SLAs.
Similar tools
Cohere
freemiumAI platform providing language models, embeddings, and reranking APIs for enterprise search, RAG, and NLP applications.
Consensus
freemiumAI-powered scientific search engine that surfaces evidence and consensus levels from peer-reviewed research papers.
Kimi
freemiumAI assistant by Moonshot with long-context reasoning, web search, and agent swarm capabilities.