Exa
Free tierWeb search API, website crawler, and deep research engine built for AI agents
Free tier available·Technical·API available
Key strengths
Fastest search API with results under 180ms (Exa Instant)Best-in-class accuracy on FRAMES, Tip-of-Tongue, and Seal0 benchmarksToken-efficient highlight extraction reducing token usage by up to 90%Supports structured outputs across 70M+ company enrichmentsUnified API covering search, crawling, and deep research in one endpoint
Free tier + paid plans
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- AI coding agents: Power coding assistants with token-efficient search across documentation, repositories, and technical references — as used by Cognition's Devin agent
- Agentic lead enrichment: Build automated pipelines that enrich CRM records with structured company and people data from Exa's 70M+ company index (e.g., HubSpot's agentic lead engine)
- RAG pipeline augmentation: Inject real-time, highlighted web excerpts into retrieval-augmented generation systems to reduce context window bloat by up to 90%
- Deep research agents: Chain Exa's Deep Agent API for multi-hop, citation-grounded research tasks requiring sub-10s synthesis across multiple sources
- Real-time news & financial monitoring: Subscribe to Monitors for streaming updates on companies, people, or topics across news and financial verticals
- MCP / tool-use integration: Register Exa as a tool in LLM agent frameworks via the MCP Server for seamless function-calling-based web search