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Exa

Query the web with an embeddings-based neural search engine designed specifically for AI models and autonomous agents.

Free + paidAPI · WebPricing checked: Sep 11, 2026
AI Search EngineResearch ToolsAI Knowledge Management
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Best for

AI developers, autonomous research agents, LLM tool calling, and applications requiring clean web scraping and semantic search.

Things to know

Free Starter tier limits API throughput to 10 queries per second and $10/month in credits; large-scale automated crawling requires payment method.

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About this tool

Overview

Exa is a revolutionary AI-powered search engine built specifically for AI applications, founded in 2021 and based in San Francisco. It aims to transform web search by leveraging advanced AI and embedding technology to understand the semantic meaning of queries and content, going beyond traditional keyword-based approaches. Exa has built its own index of high-quality web content and trained models to query this index using embedding technology similar to large language models. With its free tier, developers can integrate Exa's search capabilities into their applications, making it an ideal choice for those looking for a free AI search engine.

Semantic search:

Uses embeddings and transformer models to understand query meaning and return semantically relevant results, making it a powerful tool for AI search engines free

Content retrieval:

Provides clean, full-text content from indexed pages along with relevant highlights, ideal for developers looking for a free AI search engine

Customizable filters:

Allows filtering by date range, domain, and data category for tailored search experiences, making it a top choice for AI search engines free

API integration:

Offers simple API for developers to integrate Exa's search capabilities into applications, perfect for those seeking a free AI search engine

Get started

  1. Open the official website and confirm the service is available in your region.
  2. Check the current plan, usage limits and terms for your intended use.
  3. Try a small task with sample data before committing to a paid plan.

Editorial note

Pricing checked: Sep 11, 2026. Free Starter plan provides $20 signup credits and $10 monthly recurring credits (no credit card required, 10 QPS). Developer tier operates on usage-based pay-as-you-go pricing.

Record updated: Sep 11, 2026

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