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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Recent changes
- Plans updated: Free tier: $10 credits/month + $10 onboarding bonus (no card required). Pay-as-you-go: Search from $4/1k requests, Contents $1/1k pages, Agent $0.012–$1.00/run, Deep Search $12–15/1k requests, Monitors $15/1k requests. Enterprise: custom pricing.
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Technical Use Cases
Exa is optimized for AI agent architectures and LLM pipelines that require reliable, low-latency web retrieval. Common developer use cases include:
- Retrieval-Augmented Generation (RAG) — Feed Exa's token-efficient highlights directly into LLM context windows, cutting token costs by up to 90% versus raw web scraping
- Coding agents — Use the code-specialized search vertical to retrieve relevant repositories, documentation, and Stack Overflow-style content programmatically
- Agentic research loops — Chain the Deep Search endpoint ($12–$15/1k requests) for multi-step synthesis tasks within autonomous agent workflows
- Real-time web monitoring — Poll the Monitors endpoint to trigger agent actions on new web content matching defined queries
- Data enrichment pipelines — Combine Exa's people and company search verticals with ZoomInfo, Crunchbase, Harmonic, or Similarweb integrations for structured B2B data enrichment
- Scholarly and scientific retrieval — Query the scholarly vertical for academic content without building a custom index
- Enterprise chatbots — Deploy with zero data retention and HIPAA/SOC 2 compliance for regulated industries
Exa's sub-180ms latency and structured output format make it a drop-in retrieval layer for both streaming and batch agent architectures.
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