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AI search API🔴Developer
E

Exa

An AI-oriented search and retrieval platform with web, people, company, scholarly, and structured research data.

Starting atFree
Visit Exa →
💡

In Plain English

An AI-oriented search and retrieval platform with web, people, company, scholarly, and structured research data.

OverviewFeaturesPricingGetting StartedUse CasesIntegrationsLimitationsFAQSecurityAlternatives

Overview

Exa is an AI-oriented search and retrieval platform with web, people, company, scholarly, and structured research data. It is aimed at people who want a practical way to move from an idea or business task to a repeatable result. The vendor pages describe capabilities including Neural and web search, Page contents and highlights, People and company indexes, Deep Search with citations, Agent search endpoint. Together, those features make the product useful beyond a one-off demonstration: a team can fit it into an existing process, hand work between people and AI, and keep the output connected to the systems where work actually happens.

The strongest use cases are Research agents, Company and contact enrichment, News monitoring, Supplying cited web context to applications. A sensible rollout starts with a bounded workflow whose inputs and expected output are easy to inspect. Teams should test accuracy on their own data, decide when a person must approve an action, and measure whether the tool saves completion time rather than merely generating more material to review. Technical buyers should also evaluate identity controls, auditability, retention, export options, and how usage limits behave during busy periods.

Pricing found on the vendor site was: Starter: Free; $20 signup credit plus $10/month; Developer: Pay as you go; Search $7/1,000 requests; Enterprise: Custom; Contents: $1/1,000 pages per content type; Deep Search: $12–$15/1,000 requests. These figures are snapshots from the September 2026 research run and can vary with annual billing, region, taxes, consumption, seats, or negotiated enterprise terms. Usage-based plans deserve a small production trial because agent loops, model calls, browser time, credits, or workflow executions may grow differently from ordinary seat-based software. Where a page did not expose a dependable figure in curl-fetched HTML, the profile says so and is flagged for manual verification.

MCP compatibility is a prominent part of the product: Exa includes MCP server access on its Starter plan and offers an official server for search and retrieval tools. This can reduce one-off integration work, but teams should still scope permissions and review every tool the agent can invoke. Overall, Exa is best evaluated against a real project using the listed capabilities, with a clear budget ceiling and success criteria. Its value is highest when the surrounding workflow, ownership, and review rules are defined before broad deployment.

Verified product detail

Exa is search infrastructure designed for AI applications rather than a consumer search box. It combines web ranking, page contents, highlights, answers, people and company indexes, and deeper cited research. The homepage reports Instant results under 180 milliseconds and offers vertical coverage for news, research, financial data, people, companies, and code. Its official MCP server exposes retrieval tools directly to compatible agents.

Key features to test

  1. Neural, instant, automatic, and deep search modes. Verify behavior, limits, permissions, and plan entitlement with representative data and failure cases.
  2. Contents, highlights, answers, and citations. Verify behavior, limits, permissions, and plan entitlement with representative data and failure cases.
  3. People, company, research, news, and code indexes. Verify behavior, limits, permissions, and plan entitlement with representative data and failure cases.
  4. Agent endpoint with effort controls. Verify behavior, limits, permissions, and plan entitlement with representative data and failure cases.
  5. Official MCP search server. Verify behavior, limits, permissions, and plan entitlement with representative data and failure cases.

Current pricing and total cost

Search is $7 per 1,000 requests, Contents is $1 per 1,000 pages per content type, and Deep Search is $12–$15 per 1,000 requests. Agent pricing lists $0.10 per ACU, $0.005 per search tool call, and fixed effort from $0.012 Minimal to $1.00 X-high. Prices and entitlements can change; include taxes, overages, implementation, support, and review time in total cost.

Practical evaluation

Build a benchmark of 100 real queries covering fresh news, obscure documentation, known companies, and multi-source questions. Score top-ten recall, source authority, freshness, extraction quality, citation support, latency, and cost. Test deleted pages, duplicates, robots restrictions, and contradictory sources. Model the complete call graph because searches, content types, compute units, effort, and enrichment can all be billable. Email enrichment adds $0.02 and phone enrichment $0.07.

Honest strengths and limitations

Pros
  • Purpose-built retrieval for agent applications
  • Combines ranking, extraction, verticals, and research
  • Published units support workload cost models
Cons
  • Several billable dimensions complicate forecasting
  • Coverage and freshness vary by niche
  • Deep and enrichment workflows add cost and latency
Best use cases
  • Supplying cited context to research agents
  • Monitoring companies, people, and news
  • Adding search and enrichment to applications

Alternatives and buying checklist

Compare Tavily, Brave Search API, Perplexity, LangChain with identical inputs, acceptance criteria, security constraints, and budgets. Confirm billing interval, cancellation, retention, export, training policy, regional hosting, uptime, and support. For agents that can write code or act in connected systems, start read-only, grant least privilege, require approval for consequential writes, log every action, and keep a tested rollback path. This review reflects vendor research performed September 14, 2026; select based on accepted outcomes after correction time and operating cost, not the most impressive first prompt.

🦞

Using with OpenClaw

▼

Integrate Exa with OpenClaw through the REST API or Python SDK to provide semantic search capabilities for agent workflows and research tasks.

Use Case Example:

Enhance OpenClaw agents with semantic web search capabilities for research, fact-checking, and contextual information gathering.

Learn about OpenClaw →
🎨

Vibe Coding Friendly?

▼
Difficulty:beginner
No-Code Friendly ✨

Well-documented REST API with Python SDK makes integration straightforward for AI applications and agent workflows.

Learn about Vibe Coding →

Was this helpful?

Editorial Review

Exa's neural search engine excels at finding content that keyword-based search APIs miss entirely, making it invaluable for AI agents doing research and discovery. The smaller index means some coverage gaps, but semantic search quality is often superior to traditional alternatives.

Key Features

Neural Search Index+

A purpose-built embeddings-based web index that ranks results by semantic meaning, allowing AI agents to issue natural-language queries and retrieve conceptually relevant pages even when keywords do not match.

Contents API+

Fetches clean, parsed text, summaries, and highlights from any URL returned by search (or supplied directly), removing the need for custom scraping, boilerplate stripping, and HTML cleanup in RAG pipelines.

Answer Endpoint+

Returns a synthesized natural-language answer with inline citations from the open web, enabling developers to embed Perplexity-style cited responses into their own applications via a single API call.

Websets+

Higher-level product that turns a natural-language description of an entity type into a structured, spreadsheet-style dataset of matching results enriched with custom columns — useful for lead generation, recruiting, and market research.

Deep Research API+

Orchestrates multi-step search, browsing, and synthesis to produce long-form, cited research reports from a single high-level prompt, designed for agentic workflows that need depth rather than a single SERP.

MCP Server and Integrations+

Official Model Context Protocol server plus SDKs and integrations let MCP-aware clients (Claude, Cursor) and frameworks (LangChain, LlamaIndex) call Exa as a native tool without custom adapters.

Advanced Filters and Auto Mode+

Supports filtering by domain, date range, language, and content type, with an auto mode that dynamically chooses between neural and keyword search per query for optimal recall and precision.

Developer Tooling+

Prompt builder, API dashboard with usage analytics, status page, and detailed documentation reduce time-to-first-query and make it easier to monitor production deployments.

Pricing Plans

Starter

Free; $20 signup credit plus $10/month

    Developer

    Pay as you go; Search $7/1,000 requests

      Enterprise

      Custom

        Contents

        $1/1,000 pages per content type

          Deep Search

          $12–$15/1,000 requests

            See Full Pricing →Free vs Paid →Is it worth it? →

            Ready to get started with Exa?

            View Pricing Options →

            Getting Started with Exa

            1. 1Sign up for a free Exa account at exa.ai and get 1,000 free searches monthly
            2. 2Generate your API key from the Exa dashboard and review the documentation
            3. 3Install the Exa Python SDK (pip install exa_py) or use the REST API directly
            4. 4Test basic neural search with a simple query to understand semantic vs keyword results
            5. 5Integrate Exa search into your AI agent workflow using provided LangChain or custom integrations
            Ready to start? Try Exa →

            Best Use Cases

            🎯

            Supplying cited context to research agents

            ⚡

            Monitoring companies, people, and news

            🔧

            Adding search and enrichment to applications

            Integration Ecosystem

            6 integrations

            Exa works with these platforms and services:

            🧠 LLM Providers
            OpenAIAnthropicGoogle
            🔗 Other
            langchainllamaindexZapier
            View full Integration Matrix →

            Limitations & What It Can't Do

            We believe in transparent reviews. Here's what Exa doesn't handle well:

            • ⚠Exa's web index, while curated for quality, is smaller than the indexes maintained by Google or Bing, so coverage of very long-tail queries, niche regional sites, or breaking-news content within the last few minutes can lag general-purpose search engines. Neural search excels at conceptual matches but can occasionally return semantically adjacent pages that miss a query's literal intent, requiring developers to combine it with keyword mode or post-filtering. The platform focuses exclusively on text and web pages — there are no first-class endpoints for image, video, shopping, or local/maps results — so multimodal applications need to pair Exa with other providers. Higher-level endpoints such as Answer, Deep Research, and Websets are computationally heavier and noticeably slower than a basic search call, which can add user-perceived latency in interactive products. Finally, the credit-based pricing model bundles search and content retrieval together, making cost projections less predictable than flat per-query APIs, especially when agents make variable numbers of follow-up calls per task.

            Pros & Cons

            ✓ Pros

            • ✓Purpose-built retrieval for agent applications
            • ✓Combines ranking, extraction, verticals, and research
            • ✓Published units support workload cost models

            ✗ Cons

            • ✗Several billable dimensions complicate forecasting
            • ✗Coverage and freshness vary by niche
            • ✗Deep and enrichment workflows add cost and latency

            Frequently Asked Questions

            What makes Exa different from Google or Bing search APIs?+

            Exa is built natively for AI consumption rather than human browsing. It offers neural/semantic search over a custom-built web index, returns clean parsed content (not HTML), and exposes endpoints like Answer, Contents, and Websets that are designed around RAG and agent workflows rather than around displaying SERPs to end users.

            Does Exa offer a free tier?+

            Yes. Exa provides a free tier with monthly API credits so developers can try the Search, Contents, and Answer endpoints before upgrading. Paid plans add higher rate limits, more credits, and access to advanced features like Websets and Deep Research.

            Can Exa be used with AI agent frameworks like LangChain or MCP clients?+

            Yes. Exa publishes official SDKs, integrates with popular agent frameworks, and ships an MCP (Model Context Protocol) server that lets MCP-aware clients such as Claude and Cursor call Exa as a native tool without custom glue code.

            What is Websets and how does it differ from the Search API?+

            Websets is a higher-level product that turns a natural-language description of an entity type (for example, 'Series B fintech startups in Europe hiring engineers') into a structured dataset of matching results with enriched columns. The Search API returns ranked URLs for a single query, while Websets orchestrates many searches plus enrichment to produce a spreadsheet-style output.

            Is Exa suitable for production RAG applications?+

            Exa is positioned specifically for production RAG and agent use cases. It offers the Contents API for clean text retrieval, supports filtering by domain and date for grounding control, and provides citations from the Answer endpoint. Teams should still benchmark recall and latency against their specific corpus needs before relying on it as the sole retrieval layer.

            🔒 Security & Compliance

            🛡️ SOC2 Compliant
            ✅
            SOC2
            Yes
            ✅
            GDPR
            Yes
            —
            HIPAA
            Unknown
            ✅
            SSO
            Yes
            ❌
            Self-Hosted
            No
            ❌
            On-Prem
            No
            ✅
            RBAC
            Yes
            —
            Audit Log
            Unknown
            ✅
            API Key Auth
            Yes
            ❌
            Open Source
            No
            ✅
            Encryption at Rest
            Yes
            ✅
            Encryption in Transit
            Yes
            Data Retention: zero-retention-option
            Data Residency: US
            📋 Privacy Policy →🛡️ Security Page →
            🦞

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            What's New in 2026

            Exa has continued to expand beyond a pure search API into a broader AI web-data platform. Recent additions include the Websets product for building structured datasets from natural-language descriptions, a Deep Research API for long-form cited reports, and an official MCP server that lets Claude, Cursor, and other Model Context Protocol clients call Exa as a native tool. The Answer endpoint has been hardened for production use with citation support, and the Contents API now offers richer summaries and highlights. Developer tooling has grown with a prompt builder, an updated API dashboard, and additional case studies and integration partners, reflecting Exa's positioning as core retrieval infrastructure for agentic applications.

            Alternatives to Exa

            Tavily

            AI search API

            A web access layer for AI agents offering search, extraction, crawling, and research endpoints.

            Brave Search API

            Integrations

            Brave Search API gives agents and chatbots access to an independent web index — not Bing or Google reseller results — at $5 per 1,000 search requests with $5 in free monthly credits.

            Serper

            Search & Discovery

            Serper is a low-cost Google SERP API for developers and AI retrieval pipelines, offering 2,500 free queries, paid credit packs from $50 for 50,000 queries, fast REST access, and structured JSON results across search, images, news, places, shopping, scholar, patents, and autocomplete.

            View All Alternatives & Detailed Comparison →

            User Reviews

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            Quick Info

            Category

            AI search API

            Website

            exa.ai
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